./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:55:02,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:55:02,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:55:02,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:55:02,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:55:02,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:55:02,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:55:02,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:55:02,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:55:02,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:55:02,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:55:02,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:55:02,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:55:02,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:55:02,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:55:02,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:55:02,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:55:02,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:55:02,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:55:02,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:55:02,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:55:02,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:55:02,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:55:02,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:55:02,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:55:02,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:55:02,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:55:02,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:55:02,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:55:02,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:55:02,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:55:02,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:55:02,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:55:02,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:55:02,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:55:02,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:55:02,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:55:02,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:55:02,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:55:02,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:55:02,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:55:02,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:55:02,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:55:02,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:55:02,811 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:55:02,811 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:55:02,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:55:02,812 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:55:02,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:55:02,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:55:02,813 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:55:02,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:55:02,813 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:55:02,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:55:02,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:55:02,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:55:02,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:55:02,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:55:02,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:55:02,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:55:02,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:55:02,815 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:55:02,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:55:02,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:55:02,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:55:02,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:55:02,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:02,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:55:02,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:55:02,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:55:02,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:55:02,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:55:02,817 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:55:02,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:55:02,817 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:55:02,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:55:02,817 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:55:02,817 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f [2022-12-13 11:55:02,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:55:03,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:55:03,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:55:03,009 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:55:03,010 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:55:03,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2022-12-13 11:55:05,653 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:55:05,814 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:55:05,814 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2022-12-13 11:55:05,820 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/data/f586f4506/155ead8991e641ddac7afb2cdb911e3e/FLAG007de399a [2022-12-13 11:55:05,834 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/data/f586f4506/155ead8991e641ddac7afb2cdb911e3e [2022-12-13 11:55:05,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:55:05,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:55:05,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:05,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:55:05,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:55:05,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:05" (1/1) ... [2022-12-13 11:55:05,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a6f7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:05, skipping insertion in model container [2022-12-13 11:55:05,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:55:05" (1/1) ... [2022-12-13 11:55:05,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:55:05,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:55:06,004 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2022-12-13 11:55:06,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:06,027 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:55:06,038 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2022-12-13 11:55:06,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:55:06,056 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:55:06,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06 WrapperNode [2022-12-13 11:55:06,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:55:06,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:06,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:55:06,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:55:06,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,086 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-12-13 11:55:06,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:55:06,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:55:06,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:55:06,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:55:06,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,106 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:55:06,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:55:06,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:55:06,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:55:06,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (1/1) ... [2022-12-13 11:55:06,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:55:06,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:06,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:55:06,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:55:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:55:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 11:55:06,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 11:55:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:55:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:55:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:55:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:55:06,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:55:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:55:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:55:06,226 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:55:06,228 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:55:06,306 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:55:06,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:55:06,310 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 11:55:06,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:06 BoogieIcfgContainer [2022-12-13 11:55:06,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:55:06,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:55:06,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:55:06,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:55:06,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:55:05" (1/3) ... [2022-12-13 11:55:06,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcddb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:06, skipping insertion in model container [2022-12-13 11:55:06,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:55:06" (2/3) ... [2022-12-13 11:55:06,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcddb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:55:06, skipping insertion in model container [2022-12-13 11:55:06,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:55:06" (3/3) ... [2022-12-13 11:55:06,317 INFO L112 eAbstractionObserver]: Analyzing ICFG array_init_nondet_vars.c [2022-12-13 11:55:06,330 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:55:06,330 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:55:06,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:55:06,366 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55cedd12, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:55:06,367 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:55:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:55:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 11:55:06,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:06,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:06,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:06,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:06,379 INFO L85 PathProgramCache]: Analyzing trace with hash -687560493, now seen corresponding path program 1 times [2022-12-13 11:55:06,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:06,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762934682] [2022-12-13 11:55:06,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:06,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:06,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:55:06,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:06,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762934682] [2022-12-13 11:55:06,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762934682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:06,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:06,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:55:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509170327] [2022-12-13 11:55:06,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:06,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:55:06,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:06,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:55:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:55:06,547 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:55:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:06,573 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2022-12-13 11:55:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:55:06,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-12-13 11:55:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:06,580 INFO L225 Difference]: With dead ends: 47 [2022-12-13 11:55:06,580 INFO L226 Difference]: Without dead ends: 21 [2022-12-13 11:55:06,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:55:06,585 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:06,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:55:06,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-13 11:55:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-13 11:55:06,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:55:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-12-13 11:55:06,612 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 19 [2022-12-13 11:55:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:06,612 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-12-13 11:55:06,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 11:55:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-12-13 11:55:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 11:55:06,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:06,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:06,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:55:06,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1294753969, now seen corresponding path program 1 times [2022-12-13 11:55:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:06,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364152676] [2022-12-13 11:55:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:06,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:06,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:55:06,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:06,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364152676] [2022-12-13 11:55:06,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364152676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:55:06,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:55:06,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:55:06,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033649689] [2022-12-13 11:55:06,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:55:06,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:55:06,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:06,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:55:06,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:06,772 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 11:55:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:06,807 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-12-13 11:55:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:55:06,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-13 11:55:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:06,808 INFO L225 Difference]: With dead ends: 39 [2022-12-13 11:55:06,808 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 11:55:06,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:55:06,810 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:06,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:55:06,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 11:55:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2022-12-13 11:55:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:55:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-12-13 11:55:06,815 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 19 [2022-12-13 11:55:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:06,816 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-12-13 11:55:06,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 11:55:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-12-13 11:55:06,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 11:55:06,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:06,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:06,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:55:06,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash -554531054, now seen corresponding path program 1 times [2022-12-13 11:55:06,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:06,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309776488] [2022-12-13 11:55:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:06,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:55:07,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:07,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309776488] [2022-12-13 11:55:07,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309776488] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:07,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901071369] [2022-12-13 11:55:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:07,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:07,271 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:07,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:55:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:07,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 11:55:07,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:07,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:55:07,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:55:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:55:07,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:07,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:55:07,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:55:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 11:55:07,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901071369] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:07,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:07,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2022-12-13 11:55:07,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252722076] [2022-12-13 11:55:07,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:07,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 11:55:07,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:07,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 11:55:07,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:55:07,804 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 11:55:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:08,042 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-12-13 11:55:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:55:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2022-12-13 11:55:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:08,043 INFO L225 Difference]: With dead ends: 48 [2022-12-13 11:55:08,044 INFO L226 Difference]: Without dead ends: 46 [2022-12-13 11:55:08,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2022-12-13 11:55:08,045 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 101 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:08,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 157 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:55:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-13 11:55:08,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 29. [2022-12-13 11:55:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 11:55:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-13 11:55:08,052 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 27 [2022-12-13 11:55:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:08,052 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-13 11:55:08,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 11:55:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-13 11:55:08,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-13 11:55:08,053 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:08,053 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:08,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:08,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:08,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1909003512, now seen corresponding path program 1 times [2022-12-13 11:55:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:08,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267796397] [2022-12-13 11:55:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:08,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:08,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:08,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267796397] [2022-12-13 11:55:08,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267796397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:08,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324861388] [2022-12-13 11:55:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:08,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:08,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:08,429 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:08,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:55:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:08,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:55:08,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:08,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:08,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324861388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:08,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:08,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-13 11:55:08,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294185012] [2022-12-13 11:55:08,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:08,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 11:55:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 11:55:08,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:55:08,552 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 11:55:08,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:08,606 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-12-13 11:55:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:55:08,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2022-12-13 11:55:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:08,607 INFO L225 Difference]: With dead ends: 53 [2022-12-13 11:55:08,607 INFO L226 Difference]: Without dead ends: 41 [2022-12-13 11:55:08,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:55:08,608 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:08,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 82 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:55:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-13 11:55:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2022-12-13 11:55:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 11:55:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-12-13 11:55:08,613 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 31 [2022-12-13 11:55:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:08,613 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-12-13 11:55:08,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 11:55:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-12-13 11:55:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 11:55:08,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:08,614 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:08,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:55:08,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:08,816 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:08,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1118110763, now seen corresponding path program 2 times [2022-12-13 11:55:08,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:08,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073808661] [2022-12-13 11:55:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:08,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:09,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:09,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073808661] [2022-12-13 11:55:09,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073808661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775633383] [2022-12-13 11:55:09,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:55:09,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:09,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:09,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:55:09,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:55:09,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:09,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 11:55:09,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:09,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:09,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:55:09,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:55:09,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:55:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:09,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:09,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775633383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:09,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:09,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 23 [2022-12-13 11:55:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157052556] [2022-12-13 11:55:09,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:55:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:55:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2022-12-13 11:55:09,673 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 18 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-13 11:55:12,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:14,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:14,568 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2022-12-13 11:55:14,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:55:14,570 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 18 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 35 [2022-12-13 11:55:14,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:14,571 INFO L225 Difference]: With dead ends: 72 [2022-12-13 11:55:14,571 INFO L226 Difference]: Without dead ends: 70 [2022-12-13 11:55:14,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=341, Invalid=1381, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 11:55:14,572 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 228 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 40 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:14,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 182 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 275 Invalid, 3 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 11:55:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-13 11:55:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2022-12-13 11:55:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2022-12-13 11:55:14,580 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 35 [2022-12-13 11:55:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:14,580 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2022-12-13 11:55:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 18 states have internal predecessors, (36), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-12-13 11:55:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2022-12-13 11:55:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 11:55:14,581 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:14,581 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:14,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:55:14,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:14,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:14,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1711359563, now seen corresponding path program 2 times [2022-12-13 11:55:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:14,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325387236] [2022-12-13 11:55:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:15,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325387236] [2022-12-13 11:55:15,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325387236] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499434186] [2022-12-13 11:55:15,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:55:15,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:15,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:15,086 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:15,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:55:15,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:55:15,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:15,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 11:55:15,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:15,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:15,494 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 11:55:15,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-12-13 11:55:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 11:55:15,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:15,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 11:55:15,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-12-13 11:55:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:16,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499434186] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:16,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:16,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 34 [2022-12-13 11:55:16,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495600174] [2022-12-13 11:55:16,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 11:55:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:16,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 11:55:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=967, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 11:55:16,032 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-12-13 11:55:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:17,086 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2022-12-13 11:55:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 11:55:17,087 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) Word has length 39 [2022-12-13 11:55:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:17,088 INFO L225 Difference]: With dead ends: 66 [2022-12-13 11:55:17,088 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 11:55:17,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=520, Invalid=2450, Unknown=0, NotChecked=0, Total=2970 [2022-12-13 11:55:17,090 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 123 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:17,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 214 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:55:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 11:55:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2022-12-13 11:55:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-12-13 11:55:17,100 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 39 [2022-12-13 11:55:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:17,100 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-12-13 11:55:17,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 28 states have internal predecessors, (57), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (11), 11 states have call predecessors, (11), 8 states have call successors, (11) [2022-12-13 11:55:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-12-13 11:55:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 11:55:17,101 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:17,101 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:17,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:55:17,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 11:55:17,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:17,305 INFO L85 PathProgramCache]: Analyzing trace with hash -181817714, now seen corresponding path program 3 times [2022-12-13 11:55:17,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:17,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217881805] [2022-12-13 11:55:17,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:17,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:55:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:17,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217881805] [2022-12-13 11:55:17,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217881805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:17,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403367925] [2022-12-13 11:55:17,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:55:17,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:17,621 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:17,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:55:17,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 11:55:17,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:17,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 11:55:17,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:17,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:17,964 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:55:17,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:55:18,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:55:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:18,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:18,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:55:18,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:55:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:55:18,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403367925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:18,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:18,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2022-12-13 11:55:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802407002] [2022-12-13 11:55:18,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:18,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 11:55:18,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 11:55:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:55:18,228 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2022-12-13 11:55:20,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:20,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:20,620 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-12-13 11:55:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 11:55:20,621 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) Word has length 47 [2022-12-13 11:55:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:20,621 INFO L225 Difference]: With dead ends: 59 [2022-12-13 11:55:20,621 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 11:55:20,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 85 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=1116, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 11:55:20,622 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 97 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:20,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 162 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 294 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 11:55:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 11:55:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2022-12-13 11:55:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 42 states have internal predecessors, (45), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2022-12-13 11:55:20,629 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 47 [2022-12-13 11:55:20,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:20,629 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2022-12-13 11:55:20,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 20 states have internal predecessors, (52), 7 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2022-12-13 11:55:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-12-13 11:55:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 11:55:20,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:20,630 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:20,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:55:20,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:20,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash 513051739, now seen corresponding path program 3 times [2022-12-13 11:55:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:20,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954313383] [2022-12-13 11:55:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:20,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:21,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:21,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:55:21,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:21,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954313383] [2022-12-13 11:55:21,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954313383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:21,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132335931] [2022-12-13 11:55:21,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:55:21,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:21,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:21,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:21,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:55:21,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 11:55:21,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:21,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 11:55:21,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:21,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:21,430 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 11:55:21,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:55:21,542 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 11:55:21,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:55:21,630 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 11:55:21,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:55:21,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 11:55:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 43 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:55:21,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:21,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132335931] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:21,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:21,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 22 [2022-12-13 11:55:21,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209497262] [2022-12-13 11:55:21,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:21,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 11:55:21,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:21,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 11:55:21,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-12-13 11:55:21,718 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 19 states have internal predecessors, (45), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-13 11:55:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:22,079 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2022-12-13 11:55:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 11:55:22,080 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 19 states have internal predecessors, (45), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 51 [2022-12-13 11:55:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:22,081 INFO L225 Difference]: With dead ends: 62 [2022-12-13 11:55:22,081 INFO L226 Difference]: Without dead ends: 60 [2022-12-13 11:55:22,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 55 SyntacticMatches, 9 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 11:55:22,081 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 65 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:22,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 168 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:55:22,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-13 11:55:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2022-12-13 11:55:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 39 states have internal predecessors, (41), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2022-12-13 11:55:22,089 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 51 [2022-12-13 11:55:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:22,089 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2022-12-13 11:55:22,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0454545454545454) internal successors, (45), 19 states have internal predecessors, (45), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-13 11:55:22,089 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2022-12-13 11:55:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 11:55:22,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:22,090 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:22,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:55:22,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:22,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -581569404, now seen corresponding path program 4 times [2022-12-13 11:55:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:22,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201667305] [2022-12-13 11:55:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:22,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:55:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201667305] [2022-12-13 11:55:22,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201667305] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470541904] [2022-12-13 11:55:22,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:55:22,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:22,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:22,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:22,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:55:22,838 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:55:22,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:22,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 11:55:22,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:22,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:23,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 11:55:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:55:23,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:23,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:55:23,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:55:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:55:23,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470541904] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:23,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:23,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 27 [2022-12-13 11:55:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677903578] [2022-12-13 11:55:23,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:23,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 11:55:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 11:55:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2022-12-13 11:55:23,314 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 22 states have internal predecessors, (60), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-13 11:55:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:23,788 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-12-13 11:55:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:55:23,788 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 22 states have internal predecessors, (60), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 51 [2022-12-13 11:55:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:23,789 INFO L225 Difference]: With dead ends: 80 [2022-12-13 11:55:23,789 INFO L226 Difference]: Without dead ends: 78 [2022-12-13 11:55:23,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 94 SyntacticMatches, 7 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 11:55:23,790 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 142 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:23,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 278 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:55:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-13 11:55:23,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2022-12-13 11:55:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2022-12-13 11:55:23,797 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 51 [2022-12-13 11:55:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:23,797 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2022-12-13 11:55:23,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 22 states have internal predecessors, (60), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-13 11:55:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2022-12-13 11:55:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 11:55:23,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:23,798 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:23,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:55:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 11:55:23,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1453174918, now seen corresponding path program 5 times [2022-12-13 11:55:24,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:24,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158500905] [2022-12-13 11:55:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 11:55:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158500905] [2022-12-13 11:55:24,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158500905] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031812788] [2022-12-13 11:55:24,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:55:24,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:24,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:24,105 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:24,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:55:24,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-13 11:55:24,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:24,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 11:55:24,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 11:55:24,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 11:55:24,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031812788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:24,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:24,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-12-13 11:55:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309524271] [2022-12-13 11:55:24,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:24,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 11:55:24,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 11:55:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:55:24,317 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 11:55:24,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:24,409 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2022-12-13 11:55:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:55:24,409 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 55 [2022-12-13 11:55:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:24,410 INFO L225 Difference]: With dead ends: 85 [2022-12-13 11:55:24,410 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 11:55:24,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:55:24,411 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:24,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 138 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:55:24,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 11:55:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2022-12-13 11:55:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-12-13 11:55:24,420 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 55 [2022-12-13 11:55:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:24,420 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-12-13 11:55:24,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 11:55:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-12-13 11:55:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 11:55:24,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:24,422 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:24,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:55:24,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 11:55:24,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1754460089, now seen corresponding path program 6 times [2022-12-13 11:55:24,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:24,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666864374] [2022-12-13 11:55:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:24,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:55:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666864374] [2022-12-13 11:55:25,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666864374] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201774071] [2022-12-13 11:55:25,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:55:25,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:25,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:25,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:25,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:55:25,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-12-13 11:55:25,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:25,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 11:55:25,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:25,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:25,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:55:25,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:55:25,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 11:55:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:55:25,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:27,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201774071] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:27,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:55:27,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2022-12-13 11:55:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065505145] [2022-12-13 11:55:27,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:55:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:55:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=746, Unknown=1, NotChecked=0, Total=870 [2022-12-13 11:55:27,434 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-12-13 11:55:29,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:30,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:30,835 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2022-12-13 11:55:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 11:55:30,835 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 59 [2022-12-13 11:55:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:30,836 INFO L225 Difference]: With dead ends: 66 [2022-12-13 11:55:30,836 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 11:55:30,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=282, Invalid=1523, Unknown=1, NotChecked=0, Total=1806 [2022-12-13 11:55:30,836 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 81 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:30,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 226 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 429 Invalid, 2 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 11:55:30,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 11:55:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2022-12-13 11:55:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 45 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 11:55:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-12-13 11:55:30,843 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 59 [2022-12-13 11:55:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:30,843 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-12-13 11:55:30,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-12-13 11:55:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-12-13 11:55:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 11:55:30,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:30,844 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:30,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:55:31,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 11:55:31,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:31,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:31,047 INFO L85 PathProgramCache]: Analyzing trace with hash 120574397, now seen corresponding path program 7 times [2022-12-13 11:55:31,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:31,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721277200] [2022-12-13 11:55:31,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:31,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:55:31,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721277200] [2022-12-13 11:55:31,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721277200] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388711930] [2022-12-13 11:55:31,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:55:31,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:31,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:31,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:31,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:55:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:31,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 11:55:31,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:31,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:55:31,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:55:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 58 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 11:55:31,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:31,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:55:31,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:55:32,065 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:55:32,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388711930] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:32,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:32,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 32 [2022-12-13 11:55:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280507458] [2022-12-13 11:55:32,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:32,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 11:55:32,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 11:55:32,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-12-13 11:55:32,067 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 28 states have internal predecessors, (78), 10 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-12-13 11:55:32,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:32,632 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2022-12-13 11:55:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 11:55:32,633 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 28 states have internal predecessors, (78), 10 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) Word has length 63 [2022-12-13 11:55:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:32,633 INFO L225 Difference]: With dead ends: 96 [2022-12-13 11:55:32,633 INFO L226 Difference]: Without dead ends: 94 [2022-12-13 11:55:32,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=333, Invalid=2117, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 11:55:32,634 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 100 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:32,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 434 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:55:32,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-12-13 11:55:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 65. [2022-12-13 11:55:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 53 states have internal predecessors, (56), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-12-13 11:55:32,643 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 63 [2022-12-13 11:55:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:32,643 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-12-13 11:55:32,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 28 states have internal predecessors, (78), 10 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 10 states have call successors, (11) [2022-12-13 11:55:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-12-13 11:55:32,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 11:55:32,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:32,643 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:32,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:32,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 11:55:32,845 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:32,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1814620211, now seen corresponding path program 8 times [2022-12-13 11:55:32,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:32,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424733581] [2022-12-13 11:55:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:32,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 19 proven. 41 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 11:55:32,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:32,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424733581] [2022-12-13 11:55:32,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424733581] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:32,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209637318] [2022-12-13 11:55:32,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:55:32,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:32,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:32,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:32,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 11:55:33,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:55:33,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:33,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:55:33,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 11:55:33,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 11:55:33,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209637318] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:33,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:33,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-12-13 11:55:33,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091963358] [2022-12-13 11:55:33,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:33,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:55:33,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:55:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:55:33,248 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-13 11:55:33,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:33,364 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2022-12-13 11:55:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:55:33,365 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 67 [2022-12-13 11:55:33,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:33,366 INFO L225 Difference]: With dead ends: 101 [2022-12-13 11:55:33,366 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 11:55:33,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 129 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:55:33,367 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 43 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:33,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 161 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:55:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 11:55:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2022-12-13 11:55:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-12-13 11:55:33,375 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 67 [2022-12-13 11:55:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:33,375 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-12-13 11:55:33,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 6 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-13 11:55:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-12-13 11:55:33,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 11:55:33,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:33,376 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:33,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 11:55:33,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 11:55:33,578 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:33,578 INFO L85 PathProgramCache]: Analyzing trace with hash -700161792, now seen corresponding path program 9 times [2022-12-13 11:55:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:33,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062893147] [2022-12-13 11:55:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:33,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:55:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 11:55:34,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:34,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062893147] [2022-12-13 11:55:34,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062893147] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:34,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097086321] [2022-12-13 11:55:34,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:55:34,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:34,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:34,045 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:34,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 11:55:34,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 11:55:34,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:34,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 11:55:34,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:34,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:36,399 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:55:36,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:55:36,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:55:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 33 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:55:36,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:36,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:55:36,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:55:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 15 proven. 78 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 11:55:36,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097086321] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:36,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:36,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 34 [2022-12-13 11:55:36,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515592204] [2022-12-13 11:55:36,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:36,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 11:55:36,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 11:55:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1001, Unknown=1, NotChecked=0, Total=1122 [2022-12-13 11:55:36,704 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 29 states have internal predecessors, (81), 12 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-13 11:55:38,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:40,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:42,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:43,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:43,393 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2022-12-13 11:55:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 11:55:43,393 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 29 states have internal predecessors, (81), 12 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) Word has length 71 [2022-12-13 11:55:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:43,394 INFO L225 Difference]: With dead ends: 73 [2022-12-13 11:55:43,394 INFO L226 Difference]: Without dead ends: 71 [2022-12-13 11:55:43,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 133 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=313, Invalid=2236, Unknown=1, NotChecked=0, Total=2550 [2022-12-13 11:55:43,395 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 105 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 23 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:43,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 338 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 805 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 11:55:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-13 11:55:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2022-12-13 11:55:43,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 11:55:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2022-12-13 11:55:43,407 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 71 [2022-12-13 11:55:43,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:43,407 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2022-12-13 11:55:43,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 29 states have internal predecessors, (81), 12 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 14 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-13 11:55:43,407 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2022-12-13 11:55:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 11:55:43,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:43,408 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:43,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 11:55:43,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 11:55:43,609 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:43,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:43,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1947082230, now seen corresponding path program 10 times [2022-12-13 11:55:43,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:43,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802119897] [2022-12-13 11:55:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:43,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:55:43,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:43,999 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 11:55:43,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802119897] [2022-12-13 11:55:43,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802119897] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:43,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867599886] [2022-12-13 11:55:43,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:55:43,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:43,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:44,000 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:44,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 11:55:44,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:55:44,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:44,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-13 11:55:44,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:44,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:55:44,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:55:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 21 proven. 92 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:55:44,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:44,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:55:44,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:55:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 18 proven. 89 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 11:55:44,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867599886] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:44,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:44,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 36 [2022-12-13 11:55:44,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965929733] [2022-12-13 11:55:44,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:44,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 11:55:44,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 11:55:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 11:55:44,810 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 36 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 32 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2022-12-13 11:55:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:45,434 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-12-13 11:55:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 11:55:45,434 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 32 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) Word has length 75 [2022-12-13 11:55:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:45,435 INFO L225 Difference]: With dead ends: 112 [2022-12-13 11:55:45,435 INFO L226 Difference]: Without dead ends: 110 [2022-12-13 11:55:45,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 143 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=388, Invalid=2804, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 11:55:45,437 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 183 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:45,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 484 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:55:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-13 11:55:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 77. [2022-12-13 11:55:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 11:55:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2022-12-13 11:55:45,454 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 75 [2022-12-13 11:55:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:45,454 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2022-12-13 11:55:45,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.6285714285714286) internal successors, (92), 32 states have internal predecessors, (92), 12 states have call successors, (13), 1 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 12 states have call successors, (13) [2022-12-13 11:55:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2022-12-13 11:55:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-13 11:55:45,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:45,455 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:45,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 11:55:45,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:45,656 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1814327276, now seen corresponding path program 11 times [2022-12-13 11:55:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:45,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470608621] [2022-12-13 11:55:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:55:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 33 proven. 62 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 11:55:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:45,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470608621] [2022-12-13 11:55:45,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470608621] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:45,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658795388] [2022-12-13 11:55:45,812 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:55:45,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:45,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:45,813 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:45,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 11:55:45,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-12-13 11:55:45,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:45,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:55:45,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 11:55:46,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 11:55:46,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658795388] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:46,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:46,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-12-13 11:55:46,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573819527] [2022-12-13 11:55:46,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:46,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 11:55:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 11:55:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-12-13 11:55:46,112 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 11:55:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:46,230 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2022-12-13 11:55:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 11:55:46,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 79 [2022-12-13 11:55:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:46,232 INFO L225 Difference]: With dead ends: 117 [2022-12-13 11:55:46,232 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 11:55:46,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 152 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2022-12-13 11:55:46,232 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 78 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:46,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 151 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:55:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 11:55:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2022-12-13 11:55:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 11:55:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2022-12-13 11:55:46,243 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 79 [2022-12-13 11:55:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:46,243 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2022-12-13 11:55:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.391304347826087) internal successors, (78), 23 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 11:55:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2022-12-13 11:55:46,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 11:55:46,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:46,244 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:46,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 11:55:46,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 11:55:46,445 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash -502341447, now seen corresponding path program 12 times [2022-12-13 11:55:46,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:46,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708003565] [2022-12-13 11:55:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:46,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:55:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:55:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 18 proven. 116 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 11:55:46,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:46,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708003565] [2022-12-13 11:55:46,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708003565] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:46,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938215583] [2022-12-13 11:55:46,886 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:55:46,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:46,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:46,887 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:46,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 11:55:46,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-12-13 11:55:46,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:46,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 11:55:46,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:47,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:47,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 11:55:47,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:55:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 31 proven. 131 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:55:47,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:47,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-12-13 11:55:47,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 11:55:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 18 proven. 116 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 11:55:47,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938215583] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:47,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:47,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 40 [2022-12-13 11:55:47,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415896344] [2022-12-13 11:55:47,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:47,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 11:55:47,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 11:55:47,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1394, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:55:47,835 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-12-13 11:55:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:48,691 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2022-12-13 11:55:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 11:55:48,692 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 83 [2022-12-13 11:55:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:48,693 INFO L225 Difference]: With dead ends: 147 [2022-12-13 11:55:48,693 INFO L226 Difference]: Without dead ends: 145 [2022-12-13 11:55:48,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 155 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=581, Invalid=4111, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 11:55:48,696 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 280 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:48,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 563 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:55:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-13 11:55:48,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 94. [2022-12-13 11:55:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 76 states have internal predecessors, (80), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:55:48,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2022-12-13 11:55:48,710 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 83 [2022-12-13 11:55:48,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:48,710 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2022-12-13 11:55:48,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.58974358974359) internal successors, (101), 36 states have internal predecessors, (101), 14 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2022-12-13 11:55:48,711 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2022-12-13 11:55:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 11:55:48,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:48,711 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:48,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 11:55:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 11:55:48,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1833952977, now seen corresponding path program 13 times [2022-12-13 11:55:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:48,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107574550] [2022-12-13 11:55:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:48,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:55:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:55:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 21 proven. 131 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 11:55:49,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107574550] [2022-12-13 11:55:49,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107574550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962546755] [2022-12-13 11:55:49,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:55:49,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:49,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:49,390 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:49,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 11:55:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:49,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 11:55:49,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:49,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:50,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:55:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 15 proven. 146 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 11:55:50,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:50,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:55:50,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:55:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 21 proven. 131 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 11:55:50,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962546755] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:50,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:50,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 22] total 54 [2022-12-13 11:55:50,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039764318] [2022-12-13 11:55:50,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-13 11:55:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:50,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-13 11:55:50,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2612, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 11:55:50,596 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 54 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 47 states have internal predecessors, (124), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (23), 23 states have call predecessors, (23), 20 states have call successors, (23) [2022-12-13 11:55:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:52,057 INFO L93 Difference]: Finished difference Result 161 states and 171 transitions. [2022-12-13 11:55:52,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 11:55:52,058 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 47 states have internal predecessors, (124), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (23), 23 states have call predecessors, (23), 20 states have call successors, (23) Word has length 87 [2022-12-13 11:55:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:52,059 INFO L225 Difference]: With dead ends: 161 [2022-12-13 11:55:52,059 INFO L226 Difference]: Without dead ends: 159 [2022-12-13 11:55:52,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=961, Invalid=7781, Unknown=0, NotChecked=0, Total=8742 [2022-12-13 11:55:52,060 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 319 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:52,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 603 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 11:55:52,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-12-13 11:55:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2022-12-13 11:55:52,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.0625) internal successors, (85), 81 states have internal predecessors, (85), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:55:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2022-12-13 11:55:52,076 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 87 [2022-12-13 11:55:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:52,076 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2022-12-13 11:55:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 2.3846153846153846) internal successors, (124), 47 states have internal predecessors, (124), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (23), 23 states have call predecessors, (23), 20 states have call successors, (23) [2022-12-13 11:55:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2022-12-13 11:55:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 11:55:52,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:52,077 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:52,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 11:55:52,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 11:55:52,278 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:52,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash 645146277, now seen corresponding path program 14 times [2022-12-13 11:55:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:52,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267766046] [2022-12-13 11:55:52,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:52,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:55:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:55:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 51 proven. 87 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-13 11:55:52,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:52,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267766046] [2022-12-13 11:55:52,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267766046] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:52,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865546921] [2022-12-13 11:55:52,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:55:52,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:52,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:52,462 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:52,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 11:55:52,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:55:52,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:52,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:55:52,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 72 proven. 66 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-13 11:55:52,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 72 proven. 66 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-13 11:55:52,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865546921] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:52,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:52,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-12-13 11:55:52,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760826105] [2022-12-13 11:55:52,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 11:55:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 11:55:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-12-13 11:55:52,787 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-13 11:55:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:55:52,924 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2022-12-13 11:55:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 11:55:52,924 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 91 [2022-12-13 11:55:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:55:52,925 INFO L225 Difference]: With dead ends: 160 [2022-12-13 11:55:52,925 INFO L226 Difference]: Without dead ends: 128 [2022-12-13 11:55:52,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 175 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 11:55:52,926 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 78 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:55:52,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 207 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:55:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-13 11:55:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 94. [2022-12-13 11:55:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 76 states have internal predecessors, (79), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:55:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2022-12-13 11:55:52,949 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 91 [2022-12-13 11:55:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:55:52,949 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2022-12-13 11:55:52,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 8 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-13 11:55:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2022-12-13 11:55:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 11:55:52,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:55:52,950 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:55:52,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 11:55:53,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:53,150 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:55:53,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:55:53,151 INFO L85 PathProgramCache]: Analyzing trace with hash -110375054, now seen corresponding path program 15 times [2022-12-13 11:55:53,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:55:53,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15312754] [2022-12-13 11:55:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:55:53,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:55:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:55:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:55:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:55:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:55:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:55:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:55:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:55:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:55:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:55:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:55:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 21 proven. 162 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 11:55:53,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:55:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15312754] [2022-12-13 11:55:53,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15312754] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:55:53,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449371974] [2022-12-13 11:55:53,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:55:53,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:55:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:55:53,610 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:55:53,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 11:55:53,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-12-13 11:55:53,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:55:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-13 11:55:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:55:53,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:55:54,169 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:55:54,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:55:54,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:55:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 47 proven. 162 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 11:55:54,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:55:54,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:55:54,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:55:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 21 proven. 162 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 11:55:54,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449371974] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:55:54,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:55:54,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 40 [2022-12-13 11:55:54,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820177431] [2022-12-13 11:55:54,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:55:54,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-13 11:55:54,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:55:54,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-13 11:55:54,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1417, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:55:54,569 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 40 states, 40 states have (on average 2.7) internal successors, (108), 36 states have internal predecessors, (108), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) [2022-12-13 11:55:56,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:55:58,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:56:00,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:56:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:01,093 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2022-12-13 11:56:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 11:56:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 36 states have internal predecessors, (108), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) Word has length 95 [2022-12-13 11:56:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:01,094 INFO L225 Difference]: With dead ends: 131 [2022-12-13 11:56:01,094 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 11:56:01,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 181 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=384, Invalid=3276, Unknown=0, NotChecked=0, Total=3660 [2022-12-13 11:56:01,095 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 132 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:01,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 586 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1236 Invalid, 3 Unknown, 0 Unchecked, 6.1s Time] [2022-12-13 11:56:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 11:56:01,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2022-12-13 11:56:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 104 states have internal predecessors, (108), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:01,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 132 transitions. [2022-12-13 11:56:01,121 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 132 transitions. Word has length 95 [2022-12-13 11:56:01,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:01,122 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 132 transitions. [2022-12-13 11:56:01,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.7) internal successors, (108), 36 states have internal predecessors, (108), 15 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (17), 17 states have call predecessors, (17), 15 states have call successors, (17) [2022-12-13 11:56:01,122 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 132 transitions. [2022-12-13 11:56:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 11:56:01,123 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:01,123 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:01,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 11:56:01,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:01,324 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:01,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1072364696, now seen corresponding path program 16 times [2022-12-13 11:56:01,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:01,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084862104] [2022-12-13 11:56:01,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:01,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 24 proven. 181 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 11:56:01,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084862104] [2022-12-13 11:56:01,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084862104] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:01,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220531763] [2022-12-13 11:56:01,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:56:01,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:01,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:01,854 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:01,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 11:56:01,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:56:01,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:01,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 11:56:01,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:02,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:56:02,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:56:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 24 proven. 181 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 11:56:02,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:02,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:56:02,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:56:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 24 proven. 181 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 11:56:02,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220531763] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:02,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:02,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 22] total 46 [2022-12-13 11:56:02,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460075702] [2022-12-13 11:56:02,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:02,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 11:56:02,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:02,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 11:56:02,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 11:56:02,909 INFO L87 Difference]: Start difference. First operand 124 states and 132 transitions. Second operand has 46 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 17 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-13 11:56:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:04,037 INFO L93 Difference]: Finished difference Result 172 states and 179 transitions. [2022-12-13 11:56:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 11:56:04,038 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 17 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) Word has length 99 [2022-12-13 11:56:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:04,038 INFO L225 Difference]: With dead ends: 172 [2022-12-13 11:56:04,038 INFO L226 Difference]: Without dead ends: 170 [2022-12-13 11:56:04,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=512, Invalid=4744, Unknown=0, NotChecked=0, Total=5256 [2022-12-13 11:56:04,040 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 213 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:04,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 802 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 11:56:04,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-12-13 11:56:04,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 129. [2022-12-13 11:56:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 109 states have internal predecessors, (113), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2022-12-13 11:56:04,063 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 99 [2022-12-13 11:56:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:04,063 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2022-12-13 11:56:04,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 2.75) internal successors, (121), 41 states have internal predecessors, (121), 17 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-13 11:56:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2022-12-13 11:56:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 11:56:04,064 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:04,064 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:04,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 11:56:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 11:56:04,265 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:04,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash -428389282, now seen corresponding path program 17 times [2022-12-13 11:56:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:04,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546898625] [2022-12-13 11:56:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:04,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 73 proven. 116 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 11:56:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:04,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546898625] [2022-12-13 11:56:04,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546898625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:04,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456917314] [2022-12-13 11:56:04,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:56:04,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:04,495 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:04,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 11:56:04,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-12-13 11:56:04,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:04,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 11:56:04,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 11:56:04,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 98 proven. 91 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-12-13 11:56:04,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456917314] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:04,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:04,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2022-12-13 11:56:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251897208] [2022-12-13 11:56:04,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 11:56:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:04,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 11:56:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2022-12-13 11:56:04,853 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-12-13 11:56:05,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:05,039 INFO L93 Difference]: Finished difference Result 176 states and 183 transitions. [2022-12-13 11:56:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 11:56:05,039 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 103 [2022-12-13 11:56:05,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:05,040 INFO L225 Difference]: With dead ends: 176 [2022-12-13 11:56:05,040 INFO L226 Difference]: Without dead ends: 140 [2022-12-13 11:56:05,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 198 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 11:56:05,040 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 99 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:05,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 229 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:56:05,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-13 11:56:05,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2022-12-13 11:56:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 104 states have internal predecessors, (107), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2022-12-13 11:56:05,065 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 103 [2022-12-13 11:56:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:05,065 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2022-12-13 11:56:05,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 9 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-12-13 11:56:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2022-12-13 11:56:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 11:56:05,066 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:05,066 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:05,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 11:56:05,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:05,267 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:05,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1863612162, now seen corresponding path program 18 times [2022-12-13 11:56:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:05,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916626320] [2022-12-13 11:56:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 30 proven. 209 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-12-13 11:56:05,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:05,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916626320] [2022-12-13 11:56:05,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916626320] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:05,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355381459] [2022-12-13 11:56:05,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:56:05,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:05,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:05,827 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:05,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 11:56:05,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-12-13 11:56:05,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:05,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 59 conjunts are in the unsatisfiable core [2022-12-13 11:56:05,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:06,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:06,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:56:06,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:56:06,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:56:06,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:56:06,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:56:06,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:56:06,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:56:06,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:56:06,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:56:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 139 proven. 197 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 11:56:06,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:07,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:56:07,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:56:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 18 proven. 206 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-12-13 11:56:07,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355381459] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:07,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:07,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 21] total 48 [2022-12-13 11:56:07,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364698770] [2022-12-13 11:56:07,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:07,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 11:56:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 11:56:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-12-13 11:56:07,225 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 44 states have internal predecessors, (124), 20 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-13 11:56:09,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:56:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:10,011 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2022-12-13 11:56:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 11:56:10,011 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 44 states have internal predecessors, (124), 20 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) Word has length 107 [2022-12-13 11:56:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:10,012 INFO L225 Difference]: With dead ends: 140 [2022-12-13 11:56:10,012 INFO L226 Difference]: Without dead ends: 138 [2022-12-13 11:56:10,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 195 SyntacticMatches, 19 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=565, Invalid=4265, Unknown=0, NotChecked=0, Total=4830 [2022-12-13 11:56:10,013 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 134 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:10,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 687 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1310 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 11:56:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-13 11:56:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2022-12-13 11:56:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.0357142857142858) internal successors, (87), 85 states have internal predecessors, (87), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2022-12-13 11:56:10,030 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 107 [2022-12-13 11:56:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:10,031 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2022-12-13 11:56:10,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 44 states have internal predecessors, (124), 20 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-13 11:56:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2022-12-13 11:56:10,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 11:56:10,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:10,031 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:10,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 11:56:10,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:10,233 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:10,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2033872171, now seen corresponding path program 19 times [2022-12-13 11:56:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:10,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652357271] [2022-12-13 11:56:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 24 proven. 216 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 11:56:10,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:10,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652357271] [2022-12-13 11:56:10,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652357271] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:10,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013471037] [2022-12-13 11:56:10,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:56:10,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:10,807 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:10,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 11:56:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:10,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-13 11:56:10,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:11,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:11,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2022-12-13 11:56:11,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:56:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 45 proven. 237 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-13 11:56:11,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:12,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013471037] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:12,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:12,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28] total 49 [2022-12-13 11:56:12,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93166410] [2022-12-13 11:56:12,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:12,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 11:56:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:12,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 11:56:12,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=2489, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 11:56:12,028 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 49 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 44 states have internal predecessors, (120), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 20 states have call predecessors, (20), 18 states have call successors, (20) [2022-12-13 11:56:13,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:13,378 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2022-12-13 11:56:13,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:56:13,379 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 44 states have internal predecessors, (120), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 20 states have call predecessors, (20), 18 states have call successors, (20) Word has length 107 [2022-12-13 11:56:13,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:13,379 INFO L225 Difference]: With dead ends: 176 [2022-12-13 11:56:13,379 INFO L226 Difference]: Without dead ends: 174 [2022-12-13 11:56:13,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=832, Invalid=6478, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 11:56:13,380 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 266 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:13,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 897 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 11:56:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-13 11:56:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 117. [2022-12-13 11:56:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 95 states have internal predecessors, (99), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:13,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2022-12-13 11:56:13,401 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 107 [2022-12-13 11:56:13,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:13,401 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2022-12-13 11:56:13,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 2.5531914893617023) internal successors, (120), 44 states have internal predecessors, (120), 18 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 20 states have call predecessors, (20), 18 states have call successors, (20) [2022-12-13 11:56:13,401 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2022-12-13 11:56:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 11:56:13,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:13,401 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:13,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:13,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:13,603 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:13,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1467751585, now seen corresponding path program 20 times [2022-12-13 11:56:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:13,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461542567] [2022-12-13 11:56:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:13,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 27 proven. 239 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 11:56:14,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:14,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461542567] [2022-12-13 11:56:14,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461542567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:14,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779866460] [2022-12-13 11:56:14,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:56:14,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:14,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:14,156 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:14,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 11:56:14,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:56:14,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:14,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 11:56:14,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:14,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:15,266 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 11:56:15,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-12-13 11:56:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 112 proven. 169 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-12-13 11:56:15,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:15,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 11:56:15,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-12-13 11:56:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 111 proven. 155 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 11:56:16,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779866460] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:16,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:16,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 26] total 70 [2022-12-13 11:56:16,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164242036] [2022-12-13 11:56:16,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:16,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-12-13 11:56:16,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:16,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-12-13 11:56:16,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=4276, Unknown=0, NotChecked=0, Total=4830 [2022-12-13 11:56:16,780 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 70 states, 70 states have (on average 2.6142857142857143) internal successors, (183), 64 states have internal predecessors, (183), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (29), 29 states have call predecessors, (29), 26 states have call successors, (29) [2022-12-13 11:56:21,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:21,063 INFO L93 Difference]: Finished difference Result 189 states and 195 transitions. [2022-12-13 11:56:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:56:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.6142857142857143) internal successors, (183), 64 states have internal predecessors, (183), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (29), 29 states have call predecessors, (29), 26 states have call successors, (29) Word has length 111 [2022-12-13 11:56:21,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:21,064 INFO L225 Difference]: With dead ends: 189 [2022-12-13 11:56:21,064 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 11:56:21,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4419 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=2227, Invalid=15329, Unknown=0, NotChecked=0, Total=17556 [2022-12-13 11:56:21,065 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 332 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:21,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 852 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 11:56:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 11:56:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 117. [2022-12-13 11:56:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 95 states have (on average 1.0315789473684212) internal successors, (98), 95 states have internal predecessors, (98), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2022-12-13 11:56:21,087 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 111 [2022-12-13 11:56:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:21,087 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2022-12-13 11:56:21,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.6142857142857143) internal successors, (183), 64 states have internal predecessors, (183), 26 states have call successors, (27), 1 states have call predecessors, (27), 2 states have return successors, (29), 29 states have call predecessors, (29), 26 states have call successors, (29) [2022-12-13 11:56:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2022-12-13 11:56:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 11:56:21,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:21,088 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:21,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:21,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:21,289 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:21,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -325453340, now seen corresponding path program 21 times [2022-12-13 11:56:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:21,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490865561] [2022-12-13 11:56:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:21,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 27 proven. 278 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-12-13 11:56:21,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:21,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490865561] [2022-12-13 11:56:21,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490865561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:21,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216932322] [2022-12-13 11:56:21,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:56:21,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:21,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:21,942 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:21,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 11:56:22,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 11:56:22,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:22,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-13 11:56:22,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:22,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:25,996 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:56:25,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:56:26,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:56:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 61 proven. 278 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-12-13 11:56:26,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:26,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:56:26,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:56:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 27 proven. 278 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-12-13 11:56:26,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216932322] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:26,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:26,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 48 [2022-12-13 11:56:26,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994720985] [2022-12-13 11:56:26,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:26,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 11:56:26,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 11:56:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2079, Unknown=2, NotChecked=0, Total=2256 [2022-12-13 11:56:26,547 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 48 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 44 states have internal predecessors, (136), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2022-12-13 11:56:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:27,663 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2022-12-13 11:56:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 11:56:27,663 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 44 states have internal predecessors, (136), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) Word has length 119 [2022-12-13 11:56:27,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:27,664 INFO L225 Difference]: With dead ends: 158 [2022-12-13 11:56:27,664 INFO L226 Difference]: Without dead ends: 156 [2022-12-13 11:56:27,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 229 SyntacticMatches, 9 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1382 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=468, Invalid=4786, Unknown=2, NotChecked=0, Total=5256 [2022-12-13 11:56:27,665 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 128 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:27,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 908 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 11:56:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-12-13 11:56:27,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2022-12-13 11:56:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 128 states have (on average 1.03125) internal successors, (132), 128 states have internal predecessors, (132), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 156 transitions. [2022-12-13 11:56:27,699 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 156 transitions. Word has length 119 [2022-12-13 11:56:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:27,700 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 156 transitions. [2022-12-13 11:56:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.8333333333333335) internal successors, (136), 44 states have internal predecessors, (136), 19 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 21 states have call predecessors, (21), 19 states have call successors, (21) [2022-12-13 11:56:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 156 transitions. [2022-12-13 11:56:27,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 11:56:27,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:27,701 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:27,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 11:56:27,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 11:56:27,902 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:27,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash 731834289, now seen corresponding path program 22 times [2022-12-13 11:56:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:27,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956160815] [2022-12-13 11:56:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:56:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 28 proven. 294 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 11:56:28,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:28,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956160815] [2022-12-13 11:56:28,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956160815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:28,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704862926] [2022-12-13 11:56:28,527 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:56:28,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:28,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:28,528 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:28,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 11:56:28,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:56:28,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:28,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 11:56:28,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:28,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:29,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2022-12-13 11:56:29,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:56:29,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:56:29,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 11:56:29,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:56:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 114 proven. 298 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-13 11:56:29,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:29,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704862926] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:29,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:56:29,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 50 [2022-12-13 11:56:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899191542] [2022-12-13 11:56:29,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 11:56:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 11:56:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2022-12-13 11:56:29,761 INFO L87 Difference]: Start difference. First operand 151 states and 156 transitions. Second operand has 50 states, 49 states have (on average 2.693877551020408) internal successors, (132), 46 states have internal predecessors, (132), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2022-12-13 11:56:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:30,947 INFO L93 Difference]: Finished difference Result 170 states and 175 transitions. [2022-12-13 11:56:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 11:56:30,947 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.693877551020408) internal successors, (132), 46 states have internal predecessors, (132), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) Word has length 123 [2022-12-13 11:56:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:30,948 INFO L225 Difference]: With dead ends: 170 [2022-12-13 11:56:30,948 INFO L226 Difference]: Without dead ends: 168 [2022-12-13 11:56:30,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 154 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=661, Invalid=5819, Unknown=0, NotChecked=0, Total=6480 [2022-12-13 11:56:30,949 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 235 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:30,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1009 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:56:30,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-13 11:56:30,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 116. [2022-12-13 11:56:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-13 11:56:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 119 transitions. [2022-12-13 11:56:30,973 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 119 transitions. Word has length 123 [2022-12-13 11:56:30,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:30,973 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 119 transitions. [2022-12-13 11:56:30,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.693877551020408) internal successors, (132), 46 states have internal predecessors, (132), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2022-12-13 11:56:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 119 transitions. [2022-12-13 11:56:30,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 11:56:30,973 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:30,973 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:30,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 11:56:31,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 11:56:31,175 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:31,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1033591590, now seen corresponding path program 23 times [2022-12-13 11:56:31,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:31,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953174868] [2022-12-13 11:56:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 30 proven. 305 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-12-13 11:56:31,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:31,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953174868] [2022-12-13 11:56:31,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953174868] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:31,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433432155] [2022-12-13 11:56:31,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:56:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:31,829 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:31,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 11:56:31,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-12-13 11:56:31,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:31,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-13 11:56:31,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:32,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:56:32,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:56:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 36 proven. 317 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-13 11:56:32,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:32,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:56:32,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:56:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 30 proven. 305 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-12-13 11:56:33,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433432155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:33,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:33,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 26] total 52 [2022-12-13 11:56:33,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974782401] [2022-12-13 11:56:33,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:33,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 11:56:33,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 11:56:33,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2451, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 11:56:33,032 INFO L87 Difference]: Start difference. First operand 116 states and 119 transitions. Second operand has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 48 states have internal predecessors, (148), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-13 11:56:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:34,359 INFO L93 Difference]: Finished difference Result 176 states and 182 transitions. [2022-12-13 11:56:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 11:56:34,359 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 48 states have internal predecessors, (148), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) Word has length 123 [2022-12-13 11:56:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:34,360 INFO L225 Difference]: With dead ends: 176 [2022-12-13 11:56:34,360 INFO L226 Difference]: Without dead ends: 174 [2022-12-13 11:56:34,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 239 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1805 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=608, Invalid=6532, Unknown=0, NotChecked=0, Total=7140 [2022-12-13 11:56:34,360 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 325 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:34,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1060 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:56:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-12-13 11:56:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 125. [2022-12-13 11:56:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2022-12-13 11:56:34,389 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 123 [2022-12-13 11:56:34,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:34,389 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2022-12-13 11:56:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.9019607843137254) internal successors, (148), 48 states have internal predecessors, (148), 20 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-13 11:56:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2022-12-13 11:56:34,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 11:56:34,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:34,390 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:34,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 11:56:34,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 11:56:34,591 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:34,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash 206890192, now seen corresponding path program 24 times [2022-12-13 11:56:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:34,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406419991] [2022-12-13 11:56:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 129 proven. 186 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-13 11:56:34,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:34,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406419991] [2022-12-13 11:56:34,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406419991] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:34,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496795873] [2022-12-13 11:56:34,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:56:34,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:34,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:34,899 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:34,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 11:56:35,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-12-13 11:56:35,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 11:56:35,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 162 proven. 153 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-13 11:56:35,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 162 proven. 153 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-12-13 11:56:35,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496795873] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:35,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:35,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2022-12-13 11:56:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471686742] [2022-12-13 11:56:35,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-13 11:56:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-13 11:56:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 11:56:35,554 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 35 states have internal predecessors, (122), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-13 11:56:35,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:35,756 INFO L93 Difference]: Finished difference Result 181 states and 187 transitions. [2022-12-13 11:56:35,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 11:56:35,756 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 35 states have internal predecessors, (122), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 127 [2022-12-13 11:56:35,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:35,757 INFO L225 Difference]: With dead ends: 181 [2022-12-13 11:56:35,757 INFO L226 Difference]: Without dead ends: 137 [2022-12-13 11:56:35,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 244 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=486, Invalid=1494, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 11:56:35,757 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 126 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:35,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 243 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:56:35,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-12-13 11:56:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 120. [2022-12-13 11:56:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 12 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2022-12-13 11:56:35,784 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 127 [2022-12-13 11:56:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:35,784 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2022-12-13 11:56:35,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.4857142857142858) internal successors, (122), 35 states have internal predecessors, (122), 11 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-13 11:56:35,784 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2022-12-13 11:56:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 11:56:35,785 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:35,785 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:35,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-13 11:56:35,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 11:56:35,986 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 485078429, now seen corresponding path program 25 times [2022-12-13 11:56:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:35,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280091793] [2022-12-13 11:56:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:35,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:56:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 30 proven. 348 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 11:56:36,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:36,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280091793] [2022-12-13 11:56:36,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280091793] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:36,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157650177] [2022-12-13 11:56:36,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:56:36,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:36,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:36,614 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:36,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 11:56:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:36,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 66 conjunts are in the unsatisfiable core [2022-12-13 11:56:36,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:37,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:56:37,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:56:37,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:56:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 77 proven. 357 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-12-13 11:56:37,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:38,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:56:38,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:56:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 30 proven. 348 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 11:56:38,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157650177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:38,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:38,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 28] total 56 [2022-12-13 11:56:38,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586849131] [2022-12-13 11:56:38,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:38,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-13 11:56:38,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-13 11:56:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2842, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 11:56:38,305 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand has 56 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 52 states have internal predecessors, (157), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2022-12-13 11:56:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:39,629 INFO L93 Difference]: Finished difference Result 133 states and 136 transitions. [2022-12-13 11:56:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 11:56:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 52 states have internal predecessors, (157), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) Word has length 131 [2022-12-13 11:56:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:39,630 INFO L225 Difference]: With dead ends: 133 [2022-12-13 11:56:39,630 INFO L226 Difference]: Without dead ends: 131 [2022-12-13 11:56:39,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 251 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=569, Invalid=5911, Unknown=0, NotChecked=0, Total=6480 [2022-12-13 11:56:39,631 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 166 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:39,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 929 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 11:56:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-13 11:56:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2022-12-13 11:56:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 105 states have (on average 1.019047619047619) internal successors, (107), 105 states have internal predecessors, (107), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 11:56:39,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 131 transitions. [2022-12-13 11:56:39,659 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 131 transitions. Word has length 131 [2022-12-13 11:56:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:39,659 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 131 transitions. [2022-12-13 11:56:39,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.8545454545454545) internal successors, (157), 52 states have internal predecessors, (157), 22 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2022-12-13 11:56:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 131 transitions. [2022-12-13 11:56:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 11:56:39,660 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:39,660 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:39,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 11:56:39,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:39,861 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2003969005, now seen corresponding path program 26 times [2022-12-13 11:56:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:39,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527842293] [2022-12-13 11:56:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:56:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 33 proven. 379 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 11:56:40,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:40,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527842293] [2022-12-13 11:56:40,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527842293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:40,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995651076] [2022-12-13 11:56:40,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:56:40,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:40,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:40,549 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:40,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 11:56:40,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:56:40,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:40,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 11:56:40,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:41,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:42,058 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 11:56:42,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-12-13 11:56:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 180 proven. 253 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-12-13 11:56:42,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:42,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 11:56:42,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-12-13 11:56:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 177 proven. 235 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 11:56:43,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995651076] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:43,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:43,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31, 30] total 82 [2022-12-13 11:56:43,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052649691] [2022-12-13 11:56:43,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-12-13 11:56:43,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:43,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-12-13 11:56:43,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=5899, Unknown=0, NotChecked=0, Total=6642 [2022-12-13 11:56:43,725 INFO L87 Difference]: Start difference. First operand 128 states and 131 transitions. Second operand has 82 states, 82 states have (on average 2.7439024390243905) internal successors, (225), 76 states have internal predecessors, (225), 32 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (35), 35 states have call predecessors, (35), 32 states have call successors, (35) [2022-12-13 11:56:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:48,450 INFO L93 Difference]: Finished difference Result 186 states and 192 transitions. [2022-12-13 11:56:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-13 11:56:48,450 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.7439024390243905) internal successors, (225), 76 states have internal predecessors, (225), 32 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (35), 35 states have call predecessors, (35), 32 states have call successors, (35) Word has length 135 [2022-12-13 11:56:48,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:48,451 INFO L225 Difference]: With dead ends: 186 [2022-12-13 11:56:48,451 INFO L226 Difference]: Without dead ends: 142 [2022-12-13 11:56:48,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6434 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2996, Invalid=22126, Unknown=0, NotChecked=0, Total=25122 [2022-12-13 11:56:48,452 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 500 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:48,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 872 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:56:48,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-13 11:56:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2022-12-13 11:56:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-12-13 11:56:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2022-12-13 11:56:48,488 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 135 [2022-12-13 11:56:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:48,488 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2022-12-13 11:56:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.7439024390243905) internal successors, (225), 76 states have internal predecessors, (225), 32 states have call successors, (33), 1 states have call predecessors, (33), 2 states have return successors, (35), 35 states have call predecessors, (35), 32 states have call successors, (35) [2022-12-13 11:56:48,489 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2022-12-13 11:56:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 11:56:48,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:48,489 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:48,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 11:56:48,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:48,690 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:48,691 INFO L85 PathProgramCache]: Analyzing trace with hash 566812758, now seen corresponding path program 27 times [2022-12-13 11:56:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:48,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348693088] [2022-12-13 11:56:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:56:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:56:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 33 proven. 426 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-13 11:56:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:49,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348693088] [2022-12-13 11:56:49,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348693088] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:49,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599347589] [2022-12-13 11:56:49,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:56:49,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:49,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:49,534 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:49,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 11:56:50,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-12-13 11:56:50,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:50,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 11:56:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:50,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:56:52,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 11:56:52,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:56:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 75 proven. 426 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 11:56:52,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:52,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-12-13 11:56:52,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 11:56:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 33 proven. 426 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-13 11:56:53,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599347589] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:56:53,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:56:53,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 56 [2022-12-13 11:56:53,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792995924] [2022-12-13 11:56:53,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:56:53,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-13 11:56:53,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:56:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-13 11:56:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2864, Unknown=1, NotChecked=0, Total=3080 [2022-12-13 11:56:53,204 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand has 56 states, 56 states have (on average 2.9285714285714284) internal successors, (164), 52 states have internal predecessors, (164), 23 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2022-12-13 11:56:57,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 11:56:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:56:57,456 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2022-12-13 11:56:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 11:56:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.9285714285714284) internal successors, (164), 52 states have internal predecessors, (164), 23 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) Word has length 143 [2022-12-13 11:56:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:56:57,458 INFO L225 Difference]: With dead ends: 227 [2022-12-13 11:56:57,458 INFO L226 Difference]: Without dead ends: 225 [2022-12-13 11:56:57,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 277 SyntacticMatches, 9 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2896 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=849, Invalid=9452, Unknown=1, NotChecked=0, Total=10302 [2022-12-13 11:56:57,458 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 395 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 96 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:56:57,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 1230 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2756 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 11:56:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-12-13 11:56:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 154. [2022-12-13 11:56:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 125 states have (on average 1.04) internal successors, (130), 126 states have internal predecessors, (130), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:56:57,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2022-12-13 11:56:57,498 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 143 [2022-12-13 11:56:57,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:56:57,498 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2022-12-13 11:56:57,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.9285714285714284) internal successors, (164), 52 states have internal predecessors, (164), 23 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2022-12-13 11:56:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2022-12-13 11:56:57,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:56:57,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:56:57,499 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:56:57,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 11:56:57,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:57,700 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:56:57,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:56:57,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1610023500, now seen corresponding path program 28 times [2022-12-13 11:56:57,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:56:57,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662477186] [2022-12-13 11:56:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:56:57,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:56:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:56:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:56:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:56:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:56:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:56:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:56:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:56:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:56:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:56:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:56:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:56:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:56:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:56:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:56:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 36 proven. 461 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-13 11:56:58,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:56:58,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662477186] [2022-12-13 11:56:58,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662477186] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:56:58,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347247625] [2022-12-13 11:56:58,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:56:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:56:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:56:58,411 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:56:58,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 11:56:58,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:56:58,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:56:58,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 11:56:58,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:56:59,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:56:59,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:56:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 45 proven. 476 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-12-13 11:56:59,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:56:59,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:56:59,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:57:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 36 proven. 461 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2022-12-13 11:57:00,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347247625] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:00,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:00,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 30] total 60 [2022-12-13 11:57:00,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879535812] [2022-12-13 11:57:00,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:00,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-12-13 11:57:00,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:00,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-12-13 11:57:00,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3305, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 11:57:00,105 INFO L87 Difference]: Start difference. First operand 154 states and 164 transitions. Second operand has 60 states, 59 states have (on average 2.983050847457627) internal successors, (176), 56 states have internal predecessors, (176), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2022-12-13 11:57:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:02,166 INFO L93 Difference]: Finished difference Result 256 states and 266 transitions. [2022-12-13 11:57:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-13 11:57:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.983050847457627) internal successors, (176), 56 states have internal predecessors, (176), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) Word has length 147 [2022-12-13 11:57:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:02,167 INFO L225 Difference]: With dead ends: 256 [2022-12-13 11:57:02,167 INFO L226 Difference]: Without dead ends: 254 [2022-12-13 11:57:02,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 287 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2508 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=718, Invalid=8984, Unknown=0, NotChecked=0, Total=9702 [2022-12-13 11:57:02,168 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 241 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:02,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1632 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 11:57:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-12-13 11:57:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 159. [2022-12-13 11:57:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 130 states have (on average 1.0384615384615385) internal successors, (135), 131 states have internal predecessors, (135), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:57:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2022-12-13 11:57:02,215 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 147 [2022-12-13 11:57:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:02,215 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2022-12-13 11:57:02,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.983050847457627) internal successors, (176), 56 states have internal predecessors, (176), 24 states have call successors, (25), 1 states have call predecessors, (25), 2 states have return successors, (25), 25 states have call predecessors, (25), 24 states have call successors, (25) [2022-12-13 11:57:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2022-12-13 11:57:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 11:57:02,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:02,216 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:02,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 11:57:02,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 11:57:02,417 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:02,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:02,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1246283454, now seen corresponding path program 29 times [2022-12-13 11:57:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:02,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124198321] [2022-12-13 11:57:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:02,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 201 proven. 272 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-12-13 11:57:02,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:02,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124198321] [2022-12-13 11:57:02,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124198321] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:02,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124009622] [2022-12-13 11:57:02,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:57:02,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:02,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:02,799 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:02,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 11:57:02,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-12-13 11:57:02,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:02,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 11:57:02,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 242 proven. 231 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-12-13 11:57:03,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 242 proven. 231 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-12-13 11:57:03,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124009622] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:03,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:03,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2022-12-13 11:57:03,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713494786] [2022-12-13 11:57:03,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:03,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-13 11:57:03,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:03,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-13 11:57:03,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1245, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 11:57:03,549 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand has 41 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 41 states have internal predecessors, (144), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-13 11:57:03,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:03,870 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2022-12-13 11:57:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 11:57:03,871 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 41 states have internal predecessors, (144), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 151 [2022-12-13 11:57:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:03,872 INFO L225 Difference]: With dead ends: 260 [2022-12-13 11:57:03,872 INFO L226 Difference]: Without dead ends: 208 [2022-12-13 11:57:03,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 290 SyntacticMatches, 24 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=665, Invalid=2091, Unknown=0, NotChecked=0, Total=2756 [2022-12-13 11:57:03,872 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 162 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:03,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 337 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:57:03,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-12-13 11:57:03,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 154. [2022-12-13 11:57:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 125 states have (on average 1.032) internal successors, (129), 126 states have internal predecessors, (129), 17 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:57:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 163 transitions. [2022-12-13 11:57:03,915 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 163 transitions. Word has length 151 [2022-12-13 11:57:03,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:03,916 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 163 transitions. [2022-12-13 11:57:03,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.5121951219512195) internal successors, (144), 41 states have internal predecessors, (144), 13 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-13 11:57:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 163 transitions. [2022-12-13 11:57:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 11:57:03,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:03,917 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:03,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 11:57:04,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 11:57:04,117 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:04,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1897314831, now seen corresponding path program 30 times [2022-12-13 11:57:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:04,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120285022] [2022-12-13 11:57:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 36 proven. 512 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-12-13 11:57:04,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:04,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120285022] [2022-12-13 11:57:04,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120285022] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:04,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739637094] [2022-12-13 11:57:04,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:57:04,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:04,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:04,943 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:04,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 11:57:05,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-12-13 11:57:05,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:05,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 11:57:05,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:05,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:57:06,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 11:57:06,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:57:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 100 proven. 518 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-12-13 11:57:06,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:06,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-12-13 11:57:06,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 11:57:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 36 proven. 512 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-12-13 11:57:07,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739637094] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:07,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:07,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 32] total 64 [2022-12-13 11:57:07,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837524611] [2022-12-13 11:57:07,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:07,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-13 11:57:07,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-13 11:57:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=3746, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 11:57:07,038 INFO L87 Difference]: Start difference. First operand 154 states and 163 transitions. Second operand has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 60 states have internal predecessors, (185), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2022-12-13 11:57:09,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:09,097 INFO L93 Difference]: Finished difference Result 289 states and 298 transitions. [2022-12-13 11:57:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-13 11:57:09,097 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 60 states have internal predecessors, (185), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) Word has length 155 [2022-12-13 11:57:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:09,098 INFO L225 Difference]: With dead ends: 289 [2022-12-13 11:57:09,098 INFO L226 Difference]: Without dead ends: 287 [2022-12-13 11:57:09,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 299 SyntacticMatches, 7 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3420 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1001, Invalid=11209, Unknown=0, NotChecked=0, Total=12210 [2022-12-13 11:57:09,099 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 469 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 3145 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:09,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1556 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:57:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-13 11:57:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 209. [2022-12-13 11:57:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 177 states have (on average 1.0338983050847457) internal successors, (183), 178 states have internal predecessors, (183), 18 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 11:57:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 219 transitions. [2022-12-13 11:57:09,166 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 219 transitions. Word has length 155 [2022-12-13 11:57:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:09,166 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 219 transitions. [2022-12-13 11:57:09,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.9365079365079363) internal successors, (185), 60 states have internal predecessors, (185), 26 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (27), 27 states have call predecessors, (27), 26 states have call successors, (27) [2022-12-13 11:57:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 219 transitions. [2022-12-13 11:57:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 11:57:09,167 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:09,167 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:09,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-12-13 11:57:09,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 11:57:09,368 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:09,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:09,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1021269893, now seen corresponding path program 31 times [2022-12-13 11:57:09,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:09,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710762628] [2022-12-13 11:57:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:09,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 39 proven. 551 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-12-13 11:57:10,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:10,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710762628] [2022-12-13 11:57:10,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710762628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:10,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122926018] [2022-12-13 11:57:10,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:57:10,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:10,423 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:10,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 11:57:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:10,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-13 11:57:10,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:11,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:57:11,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 11:57:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 54 proven. 563 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-12-13 11:57:11,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:11,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:57:11,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:57:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 39 proven. 551 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-12-13 11:57:12,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122926018] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:12,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:12,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 32] total 77 [2022-12-13 11:57:12,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709076474] [2022-12-13 11:57:12,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:12,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-13 11:57:12,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:12,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-13 11:57:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=5496, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 11:57:12,244 INFO L87 Difference]: Start difference. First operand 209 states and 219 transitions. Second operand has 77 states, 75 states have (on average 2.9466666666666668) internal successors, (221), 71 states have internal predecessors, (221), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 11:57:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:14,800 INFO L93 Difference]: Finished difference Result 321 states and 331 transitions. [2022-12-13 11:57:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 11:57:14,801 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 75 states have (on average 2.9466666666666668) internal successors, (221), 71 states have internal predecessors, (221), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) Word has length 159 [2022-12-13 11:57:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:14,802 INFO L225 Difference]: With dead ends: 321 [2022-12-13 11:57:14,802 INFO L226 Difference]: Without dead ends: 319 [2022-12-13 11:57:14,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 300 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3899 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=955, Invalid=13087, Unknown=0, NotChecked=0, Total=14042 [2022-12-13 11:57:14,803 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 350 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 3567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:14,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1733 Invalid, 3567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:57:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-12-13 11:57:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 214. [2022-12-13 11:57:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 182 states have (on average 1.032967032967033) internal successors, (188), 183 states have internal predecessors, (188), 18 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 11:57:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 224 transitions. [2022-12-13 11:57:14,876 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 224 transitions. Word has length 159 [2022-12-13 11:57:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:14,876 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 224 transitions. [2022-12-13 11:57:14,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 75 states have (on average 2.9466666666666668) internal successors, (221), 71 states have internal predecessors, (221), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 11:57:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 224 transitions. [2022-12-13 11:57:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-13 11:57:14,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:14,877 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:14,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-12-13 11:57:15,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 11:57:15,078 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:15,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1886369285, now seen corresponding path program 32 times [2022-12-13 11:57:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:15,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328735925] [2022-12-13 11:57:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 243 proven. 321 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 11:57:15,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:15,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328735925] [2022-12-13 11:57:15,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328735925] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:15,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168188751] [2022-12-13 11:57:15,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:57:15,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:15,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:15,500 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:15,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 11:57:15,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:57:15,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:15,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 11:57:15,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 288 proven. 276 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 11:57:15,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 288 proven. 276 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-12-13 11:57:16,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168188751] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:16,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:16,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2022-12-13 11:57:16,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680053232] [2022-12-13 11:57:16,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:16,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-13 11:57:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-13 11:57:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 11:57:16,144 INFO L87 Difference]: Start difference. First operand 214 states and 224 transitions. Second operand has 44 states, 44 states have (on average 3.522727272727273) internal successors, (155), 44 states have internal predecessors, (155), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-13 11:57:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:16,550 INFO L93 Difference]: Finished difference Result 325 states and 335 transitions. [2022-12-13 11:57:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 11:57:16,550 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.522727272727273) internal successors, (155), 44 states have internal predecessors, (155), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 163 [2022-12-13 11:57:16,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:16,551 INFO L225 Difference]: With dead ends: 325 [2022-12-13 11:57:16,551 INFO L226 Difference]: Without dead ends: 269 [2022-12-13 11:57:16,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 313 SyntacticMatches, 26 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=765, Invalid=2427, Unknown=0, NotChecked=0, Total=3192 [2022-12-13 11:57:16,552 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 182 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:16,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 299 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:57:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-12-13 11:57:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 209. [2022-12-13 11:57:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 178 states have internal predecessors, (182), 18 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 11:57:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 218 transitions. [2022-12-13 11:57:16,624 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 218 transitions. Word has length 163 [2022-12-13 11:57:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:16,624 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 218 transitions. [2022-12-13 11:57:16,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.522727272727273) internal successors, (155), 44 states have internal predecessors, (155), 14 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-12-13 11:57:16,624 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 218 transitions. [2022-12-13 11:57:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 11:57:16,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:16,625 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:16,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-12-13 11:57:16,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:16,826 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1759787807, now seen corresponding path program 33 times [2022-12-13 11:57:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:16,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309643867] [2022-12-13 11:57:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:16,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:57:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 45 proven. 579 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 11:57:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:17,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309643867] [2022-12-13 11:57:17,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309643867] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:17,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433392714] [2022-12-13 11:57:17,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:57:17,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:17,838 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 11:57:18,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-12-13 11:57:18,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:18,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-13 11:57:18,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:18,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:57:18,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:18,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:19,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:19,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:19,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:19,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:19,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:19,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:57:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 222 proven. 570 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-12-13 11:57:19,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:20,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:57:20,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:57:20,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 33 proven. 576 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-12-13 11:57:20,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433392714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:20,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:20,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 31] total 68 [2022-12-13 11:57:20,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413411952] [2022-12-13 11:57:20,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:20,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-13 11:57:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-13 11:57:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=4233, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 11:57:20,231 INFO L87 Difference]: Start difference. First operand 209 states and 218 transitions. Second operand has 68 states, 66 states have (on average 2.909090909090909) internal successors, (192), 63 states have internal predecessors, (192), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2022-12-13 11:57:22,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:22,058 INFO L93 Difference]: Finished difference Result 273 states and 281 transitions. [2022-12-13 11:57:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 11:57:22,058 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 66 states have (on average 2.909090909090909) internal successors, (192), 63 states have internal predecessors, (192), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) Word has length 167 [2022-12-13 11:57:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:22,059 INFO L225 Difference]: With dead ends: 273 [2022-12-13 11:57:22,059 INFO L226 Difference]: Without dead ends: 271 [2022-12-13 11:57:22,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 317 SyntacticMatches, 18 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=807, Invalid=9293, Unknown=0, NotChecked=0, Total=10100 [2022-12-13 11:57:22,060 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 207 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 3627 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:22,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1687 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3627 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 11:57:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-12-13 11:57:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 169. [2022-12-13 11:57:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 138 states have (on average 1.0289855072463767) internal successors, (142), 138 states have internal predecessors, (142), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:57:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 176 transitions. [2022-12-13 11:57:22,111 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 176 transitions. Word has length 167 [2022-12-13 11:57:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:22,111 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 176 transitions. [2022-12-13 11:57:22,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 66 states have (on average 2.909090909090909) internal successors, (192), 63 states have internal predecessors, (192), 31 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2022-12-13 11:57:22,112 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 176 transitions. [2022-12-13 11:57:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 11:57:22,112 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:22,112 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:22,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-12-13 11:57:22,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 11:57:22,313 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash -286096696, now seen corresponding path program 34 times [2022-12-13 11:57:22,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:22,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884353657] [2022-12-13 11:57:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 39 proven. 606 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-12-13 11:57:23,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884353657] [2022-12-13 11:57:23,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884353657] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327739132] [2022-12-13 11:57:23,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:57:23,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:23,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:23,438 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:23,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-13 11:57:23,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:57:23,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:23,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 11:57:23,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:24,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:57:24,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 11:57:24,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 11:57:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 89 proven. 606 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-12-13 11:57:24,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:25,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327739132] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:25,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:57:25,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36] total 53 [2022-12-13 11:57:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435521312] [2022-12-13 11:57:25,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:25,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 11:57:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 11:57:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=4229, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 11:57:25,111 INFO L87 Difference]: Start difference. First operand 169 states and 176 transitions. Second operand has 53 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 49 states have internal predecessors, (145), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 11:57:27,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:27,482 INFO L93 Difference]: Finished difference Result 258 states and 264 transitions. [2022-12-13 11:57:27,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-13 11:57:27,482 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 49 states have internal predecessors, (145), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 167 [2022-12-13 11:57:27,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:27,483 INFO L225 Difference]: With dead ends: 258 [2022-12-13 11:57:27,483 INFO L226 Difference]: Without dead ends: 256 [2022-12-13 11:57:27,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 212 SyntacticMatches, 5 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3979 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1076, Invalid=12730, Unknown=0, NotChecked=0, Total=13806 [2022-12-13 11:57:27,485 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 351 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:27,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1391 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:57:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-12-13 11:57:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 177. [2022-12-13 11:57:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 145 states have (on average 1.0275862068965518) internal successors, (149), 145 states have internal predecessors, (149), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:57:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 183 transitions. [2022-12-13 11:57:27,552 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 183 transitions. Word has length 167 [2022-12-13 11:57:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:27,552 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 183 transitions. [2022-12-13 11:57:27,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 49 states have internal predecessors, (145), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 11:57:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 183 transitions. [2022-12-13 11:57:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 11:57:27,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:27,553 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:27,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-12-13 11:57:27,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 11:57:27,754 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:27,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1640373182, now seen corresponding path program 35 times [2022-12-13 11:57:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569474468] [2022-12-13 11:57:27,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:27,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 42 proven. 649 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-12-13 11:57:28,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:28,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569474468] [2022-12-13 11:57:28,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569474468] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:28,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305958378] [2022-12-13 11:57:28,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:57:28,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:28,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:28,626 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:28,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-13 11:57:28,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2022-12-13 11:57:28,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:28,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 11:57:28,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:29,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:57:30,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:57:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 72 proven. 649 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-12-13 11:57:30,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:30,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:57:30,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:57:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 42 proven. 649 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-12-13 11:57:30,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305958378] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:30,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:30,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 34] total 68 [2022-12-13 11:57:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741874736] [2022-12-13 11:57:30,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:30,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-13 11:57:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-13 11:57:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=4287, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 11:57:30,361 INFO L87 Difference]: Start difference. First operand 177 states and 183 transitions. Second operand has 68 states, 67 states have (on average 3.044776119402985) internal successors, (204), 64 states have internal predecessors, (204), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 11:57:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:32,946 INFO L93 Difference]: Finished difference Result 297 states and 303 transitions. [2022-12-13 11:57:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 11:57:32,947 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 3.044776119402985) internal successors, (204), 64 states have internal predecessors, (204), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) Word has length 171 [2022-12-13 11:57:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:32,947 INFO L225 Difference]: With dead ends: 297 [2022-12-13 11:57:32,947 INFO L226 Difference]: Without dead ends: 295 [2022-12-13 11:57:32,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 335 SyntacticMatches, 4 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3327 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=828, Invalid=11828, Unknown=0, NotChecked=0, Total=12656 [2022-12-13 11:57:32,948 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 271 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 4125 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 4197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:32,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 2247 Invalid, 4197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4125 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 11:57:32,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-12-13 11:57:33,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 182. [2022-12-13 11:57:33,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 150 states have (on average 1.0266666666666666) internal successors, (154), 150 states have internal predecessors, (154), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:57:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 188 transitions. [2022-12-13 11:57:33,015 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 188 transitions. Word has length 171 [2022-12-13 11:57:33,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:33,015 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 188 transitions. [2022-12-13 11:57:33,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 3.044776119402985) internal successors, (204), 64 states have internal predecessors, (204), 28 states have call successors, (29), 1 states have call predecessors, (29), 2 states have return successors, (29), 29 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 11:57:33,015 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 188 transitions. [2022-12-13 11:57:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 11:57:33,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:33,016 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:33,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-13 11:57:33,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 11:57:33,217 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:33,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1634186828, now seen corresponding path program 36 times [2022-12-13 11:57:33,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:33,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273633417] [2022-12-13 11:57:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:33,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 289 proven. 374 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-12-13 11:57:33,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:33,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273633417] [2022-12-13 11:57:33,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273633417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:33,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279836246] [2022-12-13 11:57:33,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:57:33,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:33,664 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:33,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 11:57:34,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-12-13 11:57:34,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:34,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 11:57:34,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 338 proven. 325 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-12-13 11:57:34,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 338 proven. 325 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-12-13 11:57:34,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279836246] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:34,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:34,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2022-12-13 11:57:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247665621] [2022-12-13 11:57:34,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-13 11:57:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:34,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-13 11:57:34,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 11:57:34,705 INFO L87 Difference]: Start difference. First operand 182 states and 188 transitions. Second operand has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-13 11:57:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:35,150 INFO L93 Difference]: Finished difference Result 301 states and 307 transitions. [2022-12-13 11:57:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 11:57:35,150 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 175 [2022-12-13 11:57:35,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:35,151 INFO L225 Difference]: With dead ends: 301 [2022-12-13 11:57:35,151 INFO L226 Difference]: Without dead ends: 241 [2022-12-13 11:57:35,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 336 SyntacticMatches, 28 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=872, Invalid=2788, Unknown=0, NotChecked=0, Total=3660 [2022-12-13 11:57:35,151 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 261 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:35,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 399 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:57:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-13 11:57:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 177. [2022-12-13 11:57:35,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 145 states have internal predecessors, (148), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:57:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 182 transitions. [2022-12-13 11:57:35,215 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 182 transitions. Word has length 175 [2022-12-13 11:57:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:35,216 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 182 transitions. [2022-12-13 11:57:35,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 15 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-12-13 11:57:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 182 transitions. [2022-12-13 11:57:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 11:57:35,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:35,216 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:35,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-13 11:57:35,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:35,418 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:35,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:35,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1020997464, now seen corresponding path program 37 times [2022-12-13 11:57:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:35,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270197675] [2022-12-13 11:57:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:35,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:57:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:57:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 48 proven. 677 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-13 11:57:36,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:36,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270197675] [2022-12-13 11:57:36,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270197675] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:36,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485681869] [2022-12-13 11:57:36,519 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:57:36,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:36,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:36,519 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:36,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 11:57:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:36,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-13 11:57:36,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:37,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:57:37,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:37,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:37,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:37,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:37,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:37,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:37,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:37,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:38,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:57:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 241 proven. 668 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-12-13 11:57:38,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:39,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:57:39,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:57:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 36 proven. 674 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-12-13 11:57:39,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485681869] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:39,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:39,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 37, 34] total 72 [2022-12-13 11:57:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180670019] [2022-12-13 11:57:39,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:39,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-13 11:57:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-13 11:57:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=4765, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 11:57:39,414 INFO L87 Difference]: Start difference. First operand 177 states and 182 transitions. Second operand has 72 states, 71 states have (on average 2.915492957746479) internal successors, (207), 68 states have internal predecessors, (207), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2022-12-13 11:57:41,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:41,651 INFO L93 Difference]: Finished difference Result 241 states and 246 transitions. [2022-12-13 11:57:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-13 11:57:41,652 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.915492957746479) internal successors, (207), 68 states have internal predecessors, (207), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) Word has length 179 [2022-12-13 11:57:41,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:41,652 INFO L225 Difference]: With dead ends: 241 [2022-12-13 11:57:41,652 INFO L226 Difference]: Without dead ends: 239 [2022-12-13 11:57:41,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 339 SyntacticMatches, 19 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3957 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=939, Invalid=11271, Unknown=0, NotChecked=0, Total=12210 [2022-12-13 11:57:41,653 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 215 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:41,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1670 Invalid, 3718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 11:57:41,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-13 11:57:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 177. [2022-12-13 11:57:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 145 states have internal predecessors, (148), 17 states have call successors, (17), 14 states have call predecessors, (17), 14 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:57:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 182 transitions. [2022-12-13 11:57:41,719 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 182 transitions. Word has length 179 [2022-12-13 11:57:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:41,719 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 182 transitions. [2022-12-13 11:57:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.915492957746479) internal successors, (207), 68 states have internal predecessors, (207), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2022-12-13 11:57:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 182 transitions. [2022-12-13 11:57:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 11:57:41,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:41,720 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:41,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-12-13 11:57:41,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-12-13 11:57:41,921 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -38045055, now seen corresponding path program 38 times [2022-12-13 11:57:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:41,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788444592] [2022-12-13 11:57:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:42,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:42,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:57:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 42 proven. 708 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 11:57:43,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:43,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788444592] [2022-12-13 11:57:43,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788444592] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:43,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174851366] [2022-12-13 11:57:43,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:57:43,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:43,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:43,068 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-13 11:57:43,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:57:43,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:43,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 85 conjunts are in the unsatisfiable core [2022-12-13 11:57:43,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:43,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:57:44,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:44,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:57:44,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:57:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1146 backedges. 87 proven. 747 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-12-13 11:57:44,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:44,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174851366] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:44,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:57:44,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 40] total 72 [2022-12-13 11:57:44,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822774234] [2022-12-13 11:57:44,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:44,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-13 11:57:44,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-13 11:57:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=5317, Unknown=0, NotChecked=0, Total=5700 [2022-12-13 11:57:44,970 INFO L87 Difference]: Start difference. First operand 177 states and 182 transitions. Second operand has 72 states, 71 states have (on average 2.8732394366197185) internal successors, (204), 67 states have internal predecessors, (204), 30 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (32), 32 states have call predecessors, (32), 30 states have call successors, (32) [2022-12-13 11:57:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:48,024 INFO L93 Difference]: Finished difference Result 322 states and 328 transitions. [2022-12-13 11:57:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-12-13 11:57:48,024 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.8732394366197185) internal successors, (204), 67 states have internal predecessors, (204), 30 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (32), 32 states have call predecessors, (32), 30 states have call successors, (32) Word has length 179 [2022-12-13 11:57:48,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:48,025 INFO L225 Difference]: With dead ends: 322 [2022-12-13 11:57:48,025 INFO L226 Difference]: Without dead ends: 320 [2022-12-13 11:57:48,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4548 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1280, Invalid=14722, Unknown=0, NotChecked=0, Total=16002 [2022-12-13 11:57:48,026 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 479 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 3982 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:48,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 2187 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 3982 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 11:57:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-12-13 11:57:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 241. [2022-12-13 11:57:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 205 states have (on average 1.024390243902439) internal successors, (210), 206 states have internal predecessors, (210), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:57:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 248 transitions. [2022-12-13 11:57:48,155 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 248 transitions. Word has length 179 [2022-12-13 11:57:48,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:48,155 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 248 transitions. [2022-12-13 11:57:48,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.8732394366197185) internal successors, (204), 67 states have internal predecessors, (204), 30 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (32), 32 states have call predecessors, (32), 30 states have call successors, (32) [2022-12-13 11:57:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 248 transitions. [2022-12-13 11:57:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-13 11:57:48,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:48,156 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:48,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-12-13 11:57:48,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:48,357 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:48,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash -77201330, now seen corresponding path program 39 times [2022-12-13 11:57:48,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:48,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421044170] [2022-12-13 11:57:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:48,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:57:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:57:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 43 proven. 724 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-13 11:57:49,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:49,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421044170] [2022-12-13 11:57:49,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421044170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:49,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4419409] [2022-12-13 11:57:49,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:57:49,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:49,635 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:49,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-13 11:57:50,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2022-12-13 11:57:50,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:50,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-13 11:57:50,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:51,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:57:51,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:51,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 11:57:51,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:51,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 11:57:51,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:57:51,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 11:57:51,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-13 11:57:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 220 proven. 724 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-12-13 11:57:51,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:52,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4419409] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:52,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:57:52,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 54 [2022-12-13 11:57:52,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105547995] [2022-12-13 11:57:52,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:52,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-13 11:57:52,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:52,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-13 11:57:52,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=4225, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 11:57:52,126 INFO L87 Difference]: Start difference. First operand 241 states and 248 transitions. Second operand has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 50 states have internal predecessors, (149), 30 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 31 states have call predecessors, (33), 30 states have call successors, (33) [2022-12-13 11:57:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:57:54,482 INFO L93 Difference]: Finished difference Result 303 states and 310 transitions. [2022-12-13 11:57:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 11:57:54,482 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 50 states have internal predecessors, (149), 30 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 31 states have call predecessors, (33), 30 states have call successors, (33) Word has length 183 [2022-12-13 11:57:54,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:57:54,483 INFO L225 Difference]: With dead ends: 303 [2022-12-13 11:57:54,483 INFO L226 Difference]: Without dead ends: 301 [2022-12-13 11:57:54,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 232 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=823, Invalid=9683, Unknown=0, NotChecked=0, Total=10506 [2022-12-13 11:57:54,484 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 221 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:57:54,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1481 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:57:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-12-13 11:57:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 194. [2022-12-13 11:57:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 158 states have (on average 1.0253164556962024) internal successors, (162), 159 states have internal predecessors, (162), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:57:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 200 transitions. [2022-12-13 11:57:54,564 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 200 transitions. Word has length 183 [2022-12-13 11:57:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:57:54,564 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 200 transitions. [2022-12-13 11:57:54,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 50 states have internal predecessors, (149), 30 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (33), 31 states have call predecessors, (33), 30 states have call successors, (33) [2022-12-13 11:57:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 200 transitions. [2022-12-13 11:57:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-13 11:57:54,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:57:54,565 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:57:54,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-12-13 11:57:54,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:54,767 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:57:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:57:54,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1869254391, now seen corresponding path program 40 times [2022-12-13 11:57:54,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:57:54,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148405531] [2022-12-13 11:57:54,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:57:54,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:57:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:57:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:57:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:57:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:57:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:57:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:57:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:57:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:57:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:57:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:57:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:57:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:57:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:57:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:57:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:57:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:57:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:57:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 45 proven. 755 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 11:57:55,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:57:55,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148405531] [2022-12-13 11:57:55,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148405531] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:57:55,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411219882] [2022-12-13 11:57:55,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:57:55,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:57:55,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:57:55,818 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:57:55,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-12-13 11:57:56,004 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:57:56,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:57:56,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-13 11:57:56,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:57:56,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:57:57,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:57:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 57 proven. 776 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-12-13 11:57:57,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:57:57,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:57:57,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:57:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 45 proven. 755 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 11:57:57,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411219882] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:57:57,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:57:57,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 36] total 72 [2022-12-13 11:57:57,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159659699] [2022-12-13 11:57:57,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:57:57,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-13 11:57:57,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:57:57,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-13 11:57:57,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=4826, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 11:57:57,990 INFO L87 Difference]: Start difference. First operand 194 states and 200 transitions. Second operand has 72 states, 71 states have (on average 3.0704225352112675) internal successors, (218), 68 states have internal predecessors, (218), 30 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) [2022-12-13 11:58:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:00,381 INFO L93 Difference]: Finished difference Result 320 states and 326 transitions. [2022-12-13 11:58:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:58:00,381 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 3.0704225352112675) internal successors, (218), 68 states have internal predecessors, (218), 30 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) Word has length 183 [2022-12-13 11:58:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:00,382 INFO L225 Difference]: With dead ends: 320 [2022-12-13 11:58:00,382 INFO L226 Difference]: Without dead ends: 318 [2022-12-13 11:58:00,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 359 SyntacticMatches, 4 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3780 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=883, Invalid=13397, Unknown=0, NotChecked=0, Total=14280 [2022-12-13 11:58:00,383 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 389 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 4327 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 4404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:00,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2156 Invalid, 4404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4327 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 11:58:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-12-13 11:58:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 199. [2022-12-13 11:58:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 164 states have internal predecessors, (167), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:58:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 205 transitions. [2022-12-13 11:58:00,467 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 205 transitions. Word has length 183 [2022-12-13 11:58:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:00,467 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 205 transitions. [2022-12-13 11:58:00,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 3.0704225352112675) internal successors, (218), 68 states have internal predecessors, (218), 30 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 31 states have call predecessors, (31), 30 states have call successors, (31) [2022-12-13 11:58:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 205 transitions. [2022-12-13 11:58:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-12-13 11:58:00,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:00,468 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:00,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-12-13 11:58:00,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:00,669 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:00,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:00,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1846642579, now seen corresponding path program 41 times [2022-12-13 11:58:00,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:00,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598187862] [2022-12-13 11:58:00,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:00,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 339 proven. 431 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-12-13 11:58:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598187862] [2022-12-13 11:58:01,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598187862] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593421040] [2022-12-13 11:58:01,192 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:58:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:01,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:01,193 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:01,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-12-13 11:58:01,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-12-13 11:58:01,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:01,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 11:58:01,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 392 proven. 378 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-12-13 11:58:01,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 392 proven. 378 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-12-13 11:58:02,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593421040] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:02,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:58:02,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2022-12-13 11:58:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477472081] [2022-12-13 11:58:02,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:02,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 11:58:02,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:58:02,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 11:58:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 11:58:02,029 INFO L87 Difference]: Start difference. First operand 199 states and 205 transitions. Second operand has 50 states, 50 states have (on average 3.54) internal successors, (177), 50 states have internal predecessors, (177), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-12-13 11:58:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:02,495 INFO L93 Difference]: Finished difference Result 324 states and 330 transitions. [2022-12-13 11:58:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:58:02,496 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.54) internal successors, (177), 50 states have internal predecessors, (177), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 187 [2022-12-13 11:58:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:02,497 INFO L225 Difference]: With dead ends: 324 [2022-12-13 11:58:02,497 INFO L226 Difference]: Without dead ends: 260 [2022-12-13 11:58:02,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 359 SyntacticMatches, 30 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=986, Invalid=3174, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 11:58:02,497 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 212 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:02,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 444 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:58:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-12-13 11:58:02,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 194. [2022-12-13 11:58:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 158 states have (on average 1.018987341772152) internal successors, (161), 159 states have internal predecessors, (161), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:58:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 199 transitions. [2022-12-13 11:58:02,578 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 199 transitions. Word has length 187 [2022-12-13 11:58:02,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:02,578 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 199 transitions. [2022-12-13 11:58:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.54) internal successors, (177), 50 states have internal predecessors, (177), 16 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-12-13 11:58:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 199 transitions. [2022-12-13 11:58:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-12-13 11:58:02,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:02,579 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:02,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-12-13 11:58:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:02,781 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1911496390, now seen corresponding path program 42 times [2022-12-13 11:58:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:02,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087817096] [2022-12-13 11:58:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:58:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 45 proven. 818 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-13 11:58:03,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:03,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087817096] [2022-12-13 11:58:03,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087817096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:03,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3045689] [2022-12-13 11:58:03,923 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:58:03,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:03,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:03,924 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:03,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-12-13 11:58:05,271 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-12-13 11:58:05,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:05,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-13 11:58:05,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:05,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:58:08,126 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:58:08,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:58:08,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:58:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 103 proven. 818 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 11:58:08,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:08,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:58:08,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:58:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 45 proven. 818 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-13 11:58:09,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3045689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:09,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:58:09,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 76 [2022-12-13 11:58:09,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583738593] [2022-12-13 11:58:09,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:09,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-12-13 11:58:09,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:58:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-12-13 11:58:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=5407, Unknown=1, NotChecked=0, Total=5700 [2022-12-13 11:58:09,205 INFO L87 Difference]: Start difference. First operand 194 states and 199 transitions. Second operand has 76 states, 75 states have (on average 2.973333333333333) internal successors, (223), 71 states have internal predecessors, (223), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 34 states have call predecessors, (34), 32 states have call successors, (34) [2022-12-13 11:58:12,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:12,099 INFO L93 Difference]: Finished difference Result 255 states and 260 transitions. [2022-12-13 11:58:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 11:58:12,099 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.973333333333333) internal successors, (223), 71 states have internal predecessors, (223), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 34 states have call predecessors, (34), 32 states have call successors, (34) Word has length 191 [2022-12-13 11:58:12,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:12,101 INFO L225 Difference]: With dead ends: 255 [2022-12-13 11:58:12,101 INFO L226 Difference]: Without dead ends: 253 [2022-12-13 11:58:12,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 371 SyntacticMatches, 8 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3662 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=807, Invalid=12764, Unknown=1, NotChecked=0, Total=13572 [2022-12-13 11:58:12,101 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 265 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 4961 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 5019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:12,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1943 Invalid, 5019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 4961 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 11:58:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-12-13 11:58:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 248. [2022-12-13 11:58:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 212 states have (on average 1.0188679245283019) internal successors, (216), 213 states have internal predecessors, (216), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:58:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 254 transitions. [2022-12-13 11:58:12,243 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 254 transitions. Word has length 191 [2022-12-13 11:58:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:12,243 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 254 transitions. [2022-12-13 11:58:12,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.973333333333333) internal successors, (223), 71 states have internal predecessors, (223), 32 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (34), 34 states have call predecessors, (34), 32 states have call successors, (34) [2022-12-13 11:58:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 254 transitions. [2022-12-13 11:58:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 11:58:12,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:12,244 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:12,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-12-13 11:58:12,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 11:58:12,445 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash -932126969, now seen corresponding path program 43 times [2022-12-13 11:58:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:12,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147365289] [2022-12-13 11:58:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:12,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:58:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:58:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 46 proven. 834 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-12-13 11:58:13,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:13,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147365289] [2022-12-13 11:58:13,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147365289] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:13,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054928833] [2022-12-13 11:58:13,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:58:13,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:13,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:13,652 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:13,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-12-13 11:58:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:13,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-13 11:58:13,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:14,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:58:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:58:14,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:58:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:58:14,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:58:15,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:58:15,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 11:58:15,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:58:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 214 proven. 828 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-12-13 11:58:15,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:16,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:58:16,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:58:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 42 proven. 832 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2022-12-13 11:58:16,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054928833] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:16,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:58:16,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 40, 38] total 78 [2022-12-13 11:58:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131965222] [2022-12-13 11:58:16,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-13 11:58:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:58:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-13 11:58:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=5643, Unknown=0, NotChecked=0, Total=6006 [2022-12-13 11:58:16,341 INFO L87 Difference]: Start difference. First operand 248 states and 254 transitions. Second operand has 78 states, 77 states have (on average 2.9740259740259742) internal successors, (229), 74 states have internal predecessors, (229), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-12-13 11:58:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:18,889 INFO L93 Difference]: Finished difference Result 258 states and 263 transitions. [2022-12-13 11:58:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-13 11:58:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.9740259740259742) internal successors, (229), 74 states have internal predecessors, (229), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) Word has length 195 [2022-12-13 11:58:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:18,890 INFO L225 Difference]: With dead ends: 258 [2022-12-13 11:58:18,890 INFO L226 Difference]: Without dead ends: 256 [2022-12-13 11:58:18,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 373 SyntacticMatches, 15 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4286 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=955, Invalid=13087, Unknown=0, NotChecked=0, Total=14042 [2022-12-13 11:58:18,891 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 221 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 4497 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 4555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 4497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:18,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2220 Invalid, 4555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 4497 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 11:58:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-12-13 11:58:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 188. [2022-12-13 11:58:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 17 states have call successors, (17), 15 states have call predecessors, (17), 15 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-12-13 11:58:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 191 transitions. [2022-12-13 11:58:18,981 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 191 transitions. Word has length 195 [2022-12-13 11:58:18,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:18,981 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 191 transitions. [2022-12-13 11:58:18,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.9740259740259742) internal successors, (229), 74 states have internal predecessors, (229), 34 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-12-13 11:58:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 191 transitions. [2022-12-13 11:58:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 11:58:18,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:18,982 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:18,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-12-13 11:58:19,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-12-13 11:58:19,184 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1959522608, now seen corresponding path program 44 times [2022-12-13 11:58:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:19,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261463187] [2022-12-13 11:58:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:58:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 48 proven. 869 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-13 11:58:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261463187] [2022-12-13 11:58:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261463187] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876224228] [2022-12-13 11:58:20,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:58:20,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:20,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:20,274 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:20,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 11:58:20,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:58:20,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:20,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 11:58:20,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:21,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:58:22,407 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 11:58:22,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-12-13 11:58:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 420 proven. 533 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-12-13 11:58:22,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:24,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 11:58:24,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-12-13 11:58:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 412 proven. 505 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-12-13 11:58:26,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876224228] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:26,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:58:26,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 41, 40] total 112 [2022-12-13 11:58:26,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341200559] [2022-12-13 11:58:26,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:26,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-12-13 11:58:26,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:58:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-12-13 11:58:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1338, Invalid=11094, Unknown=0, NotChecked=0, Total=12432 [2022-12-13 11:58:26,224 INFO L87 Difference]: Start difference. First operand 188 states and 191 transitions. Second operand has 112 states, 112 states have (on average 2.9464285714285716) internal successors, (330), 106 states have internal predecessors, (330), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (50), 50 states have call predecessors, (50), 47 states have call successors, (50) [2022-12-13 11:58:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:36,971 INFO L93 Difference]: Finished difference Result 266 states and 272 transitions. [2022-12-13 11:58:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-12-13 11:58:36,972 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.9464285714285716) internal successors, (330), 106 states have internal predecessors, (330), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (50), 50 states have call predecessors, (50), 47 states have call successors, (50) Word has length 195 [2022-12-13 11:58:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:36,972 INFO L225 Difference]: With dead ends: 266 [2022-12-13 11:58:36,972 INFO L226 Difference]: Without dead ends: 202 [2022-12-13 11:58:36,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13134 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=5356, Invalid=44596, Unknown=0, NotChecked=0, Total=49952 [2022-12-13 11:58:36,975 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 734 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 5008 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 5327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 5008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:36,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1782 Invalid, 5327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 5008 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 11:58:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-12-13 11:58:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 192. [2022-12-13 11:58:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 11:58:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2022-12-13 11:58:37,068 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 195 [2022-12-13 11:58:37,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:37,068 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2022-12-13 11:58:37,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 2.9464285714285716) internal successors, (330), 106 states have internal predecessors, (330), 47 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (50), 50 states have call predecessors, (50), 47 states have call successors, (50) [2022-12-13 11:58:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2022-12-13 11:58:37,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-12-13 11:58:37,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:37,069 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:37,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-12-13 11:58:37,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-12-13 11:58:37,270 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 785512179, now seen corresponding path program 45 times [2022-12-13 11:58:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:37,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276116090] [2022-12-13 11:58:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:58:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:58:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 48 proven. 936 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-12-13 11:58:38,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276116090] [2022-12-13 11:58:38,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276116090] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280772689] [2022-12-13 11:58:38,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:58:38,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:38,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:38,440 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:38,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 11:58:39,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-12-13 11:58:39,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:39,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 88 conjunts are in the unsatisfiable core [2022-12-13 11:58:39,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:40,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:58:42,418 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:58:42,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:58:42,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:58:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 146 proven. 936 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-12-13 11:58:43,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:43,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:58:43,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:58:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 48 proven. 936 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-12-13 11:58:43,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280772689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:43,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:58:43,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 76 [2022-12-13 11:58:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789573744] [2022-12-13 11:58:43,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:43,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-12-13 11:58:43,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:58:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-12-13 11:58:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=5412, Unknown=1, NotChecked=0, Total=5700 [2022-12-13 11:58:43,489 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 76 states, 76 states have (on average 3.0789473684210527) internal successors, (234), 72 states have internal predecessors, (234), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2022-12-13 11:58:46,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:46,742 INFO L93 Difference]: Finished difference Result 205 states and 208 transitions. [2022-12-13 11:58:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-13 11:58:46,742 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.0789473684210527) internal successors, (234), 72 states have internal predecessors, (234), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) Word has length 203 [2022-12-13 11:58:46,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:46,743 INFO L225 Difference]: With dead ends: 205 [2022-12-13 11:58:46,743 INFO L226 Difference]: Without dead ends: 203 [2022-12-13 11:58:46,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 397 SyntacticMatches, 9 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3531 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=762, Invalid=12347, Unknown=1, NotChecked=0, Total=13110 [2022-12-13 11:58:46,744 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 221 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 4995 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 5055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 4995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:46,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 2185 Invalid, 5055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 4995 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 11:58:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-13 11:58:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 200. [2022-12-13 11:58:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 165 states have internal predecessors, (167), 18 states have call successors, (18), 16 states have call predecessors, (18), 16 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 11:58:46,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 203 transitions. [2022-12-13 11:58:46,840 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 203 transitions. Word has length 203 [2022-12-13 11:58:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:46,840 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 203 transitions. [2022-12-13 11:58:46,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.0789473684210527) internal successors, (234), 72 states have internal predecessors, (234), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2022-12-13 11:58:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 203 transitions. [2022-12-13 11:58:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-12-13 11:58:46,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:46,841 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:46,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-13 11:58:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-12-13 11:58:47,042 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:47,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -14056855, now seen corresponding path program 46 times [2022-12-13 11:58:47,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:47,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569821553] [2022-12-13 11:58:47,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:58:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:58:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 51 proven. 991 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-12-13 11:58:48,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:48,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569821553] [2022-12-13 11:58:48,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569821553] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:48,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486091722] [2022-12-13 11:58:48,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:58:48,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:48,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:48,286 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:48,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-13 11:58:48,532 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:58:48,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:48,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 91 conjunts are in the unsatisfiable core [2022-12-13 11:58:48,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:49,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:58:50,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:58:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 63 proven. 1018 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-12-13 11:58:50,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:50,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:58:50,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:58:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 51 proven. 991 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-12-13 11:58:50,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486091722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:50,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:58:50,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 40] total 80 [2022-12-13 11:58:50,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879741844] [2022-12-13 11:58:50,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-12-13 11:58:50,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:58:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-12-13 11:58:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=6000, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 11:58:50,744 INFO L87 Difference]: Start difference. First operand 200 states and 203 transitions. Second operand has 80 states, 79 states have (on average 3.1139240506329116) internal successors, (246), 76 states have internal predecessors, (246), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-12-13 11:58:53,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:53,959 INFO L93 Difference]: Finished difference Result 288 states and 294 transitions. [2022-12-13 11:58:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-13 11:58:53,960 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 3.1139240506329116) internal successors, (246), 76 states have internal predecessors, (246), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) Word has length 207 [2022-12-13 11:58:53,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:53,960 INFO L225 Difference]: With dead ends: 288 [2022-12-13 11:58:53,960 INFO L226 Difference]: Without dead ends: 286 [2022-12-13 11:58:53,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 407 SyntacticMatches, 4 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4773 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=993, Invalid=16829, Unknown=0, NotChecked=0, Total=17822 [2022-12-13 11:58:53,962 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 366 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 5993 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 6075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 5993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:53,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 2637 Invalid, 6075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 5993 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 11:58:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-12-13 11:58:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 209. [2022-12-13 11:58:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 173 states have internal predecessors, (176), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:58:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2022-12-13 11:58:54,069 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 207 [2022-12-13 11:58:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:54,069 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 214 transitions. [2022-12-13 11:58:54,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 3.1139240506329116) internal successors, (246), 76 states have internal predecessors, (246), 34 states have call successors, (35), 1 states have call predecessors, (35), 2 states have return successors, (35), 35 states have call predecessors, (35), 34 states have call successors, (35) [2022-12-13 11:58:54,069 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 214 transitions. [2022-12-13 11:58:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-12-13 11:58:54,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:54,070 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:54,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-12-13 11:58:54,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:54,271 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:54,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2034393823, now seen corresponding path program 47 times [2022-12-13 11:58:54,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:54,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571609735] [2022-12-13 11:58:54,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:54,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:58:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:58:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 451 proven. 557 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-12-13 11:58:54,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571609735] [2022-12-13 11:58:54,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571609735] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056907709] [2022-12-13 11:58:54,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:58:54,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:54,931 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:54,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-12-13 11:58:55,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-12-13 11:58:55,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:55,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 11:58:55,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:58:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 512 proven. 496 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-12-13 11:58:55,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:58:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 512 proven. 496 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-12-13 11:58:56,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056907709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:58:56,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:58:56,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2022-12-13 11:58:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607628844] [2022-12-13 11:58:56,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:58:56,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-13 11:58:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:58:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-13 11:58:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 11:58:56,133 INFO L87 Difference]: Start difference. First operand 209 states and 214 transitions. Second operand has 56 states, 56 states have (on average 3.5535714285714284) internal successors, (199), 56 states have internal predecessors, (199), 18 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-13 11:58:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:58:56,770 INFO L93 Difference]: Finished difference Result 293 states and 299 transitions. [2022-12-13 11:58:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-13 11:58:56,770 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.5535714285714284) internal successors, (199), 56 states have internal predecessors, (199), 18 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) Word has length 211 [2022-12-13 11:58:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:58:56,771 INFO L225 Difference]: With dead ends: 293 [2022-12-13 11:58:56,771 INFO L226 Difference]: Without dead ends: 221 [2022-12-13 11:58:56,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 405 SyntacticMatches, 34 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1235, Invalid=4021, Unknown=0, NotChecked=0, Total=5256 [2022-12-13 11:58:56,772 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 211 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:58:56,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 524 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:58:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-12-13 11:58:56,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 204. [2022-12-13 11:58:56,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:58:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 208 transitions. [2022-12-13 11:58:56,875 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 208 transitions. Word has length 211 [2022-12-13 11:58:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:58:56,875 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 208 transitions. [2022-12-13 11:58:56,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.5535714285714284) internal successors, (199), 56 states have internal predecessors, (199), 18 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 18 states have call predecessors, (19), 18 states have call successors, (19) [2022-12-13 11:58:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 208 transitions. [2022-12-13 11:58:56,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-12-13 11:58:56,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:58:56,877 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:58:56,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-12-13 11:58:57,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-12-13 11:58:57,078 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:58:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:58:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash 488504236, now seen corresponding path program 48 times [2022-12-13 11:58:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:58:57,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085704183] [2022-12-13 11:58:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:58:57,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:58:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:58:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:58:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:58:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:58:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:58:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:58:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:58:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:58:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:58:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:58:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:58:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:58:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:58:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:58:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:58:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:58:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:58:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:58:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:58:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:58:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 51 proven. 1062 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-12-13 11:58:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:58:58,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085704183] [2022-12-13 11:58:58,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085704183] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:58:58,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047812440] [2022-12-13 11:58:58,409 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:58:58,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:58:58,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:58:58,410 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:58:58,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-13 11:58:59,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-12-13 11:58:59,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:58:59,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 87 conjunts are in the unsatisfiable core [2022-12-13 11:58:59,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:00,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:59:02,351 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:59:02,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:59:02,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:59:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 117 proven. 1062 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-12-13 11:59:03,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:03,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:59:03,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:59:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 51 proven. 1062 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-12-13 11:59:03,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047812440] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:03,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:03,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 80 [2022-12-13 11:59:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381496753] [2022-12-13 11:59:03,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:03,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-12-13 11:59:03,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-12-13 11:59:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=6016, Unknown=1, NotChecked=0, Total=6320 [2022-12-13 11:59:03,481 INFO L87 Difference]: Start difference. First operand 204 states and 208 transitions. Second operand has 80 states, 80 states have (on average 3.1) internal successors, (248), 76 states have internal predecessors, (248), 35 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 37 states have call predecessors, (37), 35 states have call successors, (37) [2022-12-13 11:59:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:59:06,675 INFO L93 Difference]: Finished difference Result 217 states and 220 transitions. [2022-12-13 11:59:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 11:59:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.1) internal successors, (248), 76 states have internal predecessors, (248), 35 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 37 states have call predecessors, (37), 35 states have call successors, (37) Word has length 215 [2022-12-13 11:59:06,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:59:06,676 INFO L225 Difference]: With dead ends: 217 [2022-12-13 11:59:06,676 INFO L226 Difference]: Without dead ends: 215 [2022-12-13 11:59:06,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 421 SyntacticMatches, 9 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3918 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=804, Invalid=13715, Unknown=1, NotChecked=0, Total=14520 [2022-12-13 11:59:06,677 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 238 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 5599 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 5599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:59:06,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 2305 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 5599 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 11:59:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-12-13 11:59:06,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2022-12-13 11:59:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 175 states have internal predecessors, (177), 19 states have call successors, (19), 17 states have call predecessors, (19), 17 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 11:59:06,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 215 transitions. [2022-12-13 11:59:06,780 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 215 transitions. Word has length 215 [2022-12-13 11:59:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:59:06,780 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 215 transitions. [2022-12-13 11:59:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.1) internal successors, (248), 76 states have internal predecessors, (248), 35 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (37), 37 states have call predecessors, (37), 35 states have call successors, (37) [2022-12-13 11:59:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 215 transitions. [2022-12-13 11:59:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-12-13 11:59:06,781 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:59:06,781 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 17, 17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:06,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-12-13 11:59:06,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:06,981 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:59:06,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:06,982 INFO L85 PathProgramCache]: Analyzing trace with hash 704807586, now seen corresponding path program 49 times [2022-12-13 11:59:06,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:59:06,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091436312] [2022-12-13 11:59:06,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:59:06,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:59:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:59:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:59:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:59:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:59:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:59:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:59:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:59:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:59:08,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:59:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:59:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:59:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:59:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:59:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:59:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:59:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:59:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:59:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:59:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:59:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 54 proven. 1121 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-12-13 11:59:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:59:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091436312] [2022-12-13 11:59:08,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091436312] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:59:08,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919070690] [2022-12-13 11:59:08,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:59:08,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:08,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:08,178 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:59:08,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-12-13 11:59:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:08,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-13 11:59:08,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:09,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:59:10,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:59:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 87 proven. 1130 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-12-13 11:59:10,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:10,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:59:10,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:59:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1757 backedges. 54 proven. 1121 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-12-13 11:59:10,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919070690] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:10,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:10,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 42] total 84 [2022-12-13 11:59:10,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008820457] [2022-12-13 11:59:10,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:10,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-12-13 11:59:10,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:10,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-12-13 11:59:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=6635, Unknown=0, NotChecked=0, Total=6972 [2022-12-13 11:59:10,880 INFO L87 Difference]: Start difference. First operand 212 states and 215 transitions. Second operand has 84 states, 83 states have (on average 3.1325301204819276) internal successors, (260), 80 states have internal predecessors, (260), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2022-12-13 11:59:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:59:15,231 INFO L93 Difference]: Finished difference Result 304 states and 310 transitions. [2022-12-13 11:59:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-13 11:59:15,232 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 3.1325301204819276) internal successors, (260), 80 states have internal predecessors, (260), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) Word has length 219 [2022-12-13 11:59:15,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:59:15,233 INFO L225 Difference]: With dead ends: 304 [2022-12-13 11:59:15,233 INFO L226 Difference]: Without dead ends: 302 [2022-12-13 11:59:15,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5313 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1048, Invalid=18692, Unknown=0, NotChecked=0, Total=19740 [2022-12-13 11:59:15,235 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 499 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 6480 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2787 SdHoareTripleChecker+Invalid, 6568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 6480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:59:15,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 2787 Invalid, 6568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 6480 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 11:59:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-12-13 11:59:15,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 221. [2022-12-13 11:59:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 183 states have (on average 1.0163934426229508) internal successors, (186), 183 states have internal predecessors, (186), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 11:59:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 226 transitions. [2022-12-13 11:59:15,354 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 226 transitions. Word has length 219 [2022-12-13 11:59:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:59:15,354 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 226 transitions. [2022-12-13 11:59:15,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 3.1325301204819276) internal successors, (260), 80 states have internal predecessors, (260), 36 states have call successors, (37), 1 states have call predecessors, (37), 2 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2022-12-13 11:59:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 226 transitions. [2022-12-13 11:59:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-12-13 11:59:15,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:59:15,355 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:15,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-12-13 11:59:15,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:15,556 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:59:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1833001320, now seen corresponding path program 50 times [2022-12-13 11:59:15,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:59:15,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721521878] [2022-12-13 11:59:15,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:59:15,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:59:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:59:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:59:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:59:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:59:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:59:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:59:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:59:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:59:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:59:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:59:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:59:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:59:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:59:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:59:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:59:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:59:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:59:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:59:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:59:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1823 backedges. 513 proven. 626 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-12-13 11:59:16,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:59:16,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721521878] [2022-12-13 11:59:16,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721521878] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:59:16,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855264149] [2022-12-13 11:59:16,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:59:16,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:16,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:16,302 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:59:16,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-12-13 11:59:16,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 11:59:16,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:59:16,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 11:59:16,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1823 backedges. 578 proven. 561 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-12-13 11:59:17,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1823 backedges. 578 proven. 561 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-12-13 11:59:17,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855264149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:17,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:17,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2022-12-13 11:59:17,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590635622] [2022-12-13 11:59:17,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-13 11:59:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-13 11:59:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 11:59:17,603 INFO L87 Difference]: Start difference. First operand 221 states and 226 transitions. Second operand has 59 states, 59 states have (on average 3.559322033898305) internal successors, (210), 59 states have internal predecessors, (210), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-13 11:59:18,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:59:18,206 INFO L93 Difference]: Finished difference Result 309 states and 315 transitions. [2022-12-13 11:59:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 11:59:18,206 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.559322033898305) internal successors, (210), 59 states have internal predecessors, (210), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 223 [2022-12-13 11:59:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:59:18,207 INFO L225 Difference]: With dead ends: 309 [2022-12-13 11:59:18,207 INFO L226 Difference]: Without dead ends: 233 [2022-12-13 11:59:18,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 428 SyntacticMatches, 36 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2730 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1370, Invalid=4482, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 11:59:18,208 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 258 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:59:18,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 428 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:59:18,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-12-13 11:59:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 216. [2022-12-13 11:59:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 178 states have internal predecessors, (180), 20 states have call successors, (20), 17 states have call predecessors, (20), 17 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 11:59:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2022-12-13 11:59:18,319 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 223 [2022-12-13 11:59:18,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:59:18,319 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 220 transitions. [2022-12-13 11:59:18,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.559322033898305) internal successors, (210), 59 states have internal predecessors, (210), 19 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-13 11:59:18,319 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 220 transitions. [2022-12-13 11:59:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-12-13 11:59:18,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:59:18,320 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:18,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-12-13 11:59:18,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-12-13 11:59:18,520 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:59:18,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1414803301, now seen corresponding path program 51 times [2022-12-13 11:59:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:59:18,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004229578] [2022-12-13 11:59:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:59:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:59:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:59:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:59:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:59:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:59:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:59:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:59:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:59:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:59:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:59:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:59:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:59:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:59:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:59:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:59:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:59:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:59:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:59:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:59:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:59:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:59:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 54 proven. 1196 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-12-13 11:59:20,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:59:20,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004229578] [2022-12-13 11:59:20,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004229578] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:59:20,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22401415] [2022-12-13 11:59:20,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 11:59:20,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:20,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:20,043 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:59:20,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-12-13 11:59:21,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-12-13 11:59:21,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:59:21,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-13 11:59:21,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:22,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:59:24,628 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:59:24,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:59:25,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:59:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 166 proven. 1196 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-12-13 11:59:25,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:25,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:59:25,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:59:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1902 backedges. 54 proven. 1196 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-12-13 11:59:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22401415] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:25,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:25,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 84 [2022-12-13 11:59:25,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131836275] [2022-12-13 11:59:25,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:25,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-12-13 11:59:25,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-12-13 11:59:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=6652, Unknown=1, NotChecked=0, Total=6972 [2022-12-13 11:59:25,868 INFO L87 Difference]: Start difference. First operand 216 states and 220 transitions. Second operand has 84 states, 84 states have (on average 3.119047619047619) internal successors, (262), 80 states have internal predecessors, (262), 37 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) [2022-12-13 11:59:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:59:29,051 INFO L93 Difference]: Finished difference Result 229 states and 232 transitions. [2022-12-13 11:59:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-13 11:59:29,052 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.119047619047619) internal successors, (262), 80 states have internal predecessors, (262), 37 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) Word has length 227 [2022-12-13 11:59:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:59:29,052 INFO L225 Difference]: With dead ends: 229 [2022-12-13 11:59:29,052 INFO L226 Difference]: Without dead ends: 227 [2022-12-13 11:59:29,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 445 SyntacticMatches, 9 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4325 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=846, Invalid=15155, Unknown=1, NotChecked=0, Total=16002 [2022-12-13 11:59:29,054 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 178 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 6193 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 6247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 6193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:59:29,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 2919 Invalid, 6247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 6193 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 11:59:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-13 11:59:29,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224. [2022-12-13 11:59:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 185 states have internal predecessors, (187), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 11:59:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 227 transitions. [2022-12-13 11:59:29,169 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 227 transitions. Word has length 227 [2022-12-13 11:59:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:59:29,169 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 227 transitions. [2022-12-13 11:59:29,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.119047619047619) internal successors, (262), 80 states have internal predecessors, (262), 37 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) [2022-12-13 11:59:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 227 transitions. [2022-12-13 11:59:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-12-13 11:59:29,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:59:29,170 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:29,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-12-13 11:59:29,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-12-13 11:59:29,371 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:59:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1357499941, now seen corresponding path program 52 times [2022-12-13 11:59:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:59:29,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940420628] [2022-12-13 11:59:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:59:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:59:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:59:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:59:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:59:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:59:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:59:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:59:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:59:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:59:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:59:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:59:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:59:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:59:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:59:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:59:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:59:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:59:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:59:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:59:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:59:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:59:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1968 backedges. 57 proven. 1259 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-12-13 11:59:30,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:59:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940420628] [2022-12-13 11:59:30,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940420628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:59:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117605154] [2022-12-13 11:59:30,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 11:59:30,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:30,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:30,984 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:59:30,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-12-13 11:59:31,196 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 11:59:31,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:59:31,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-13 11:59:31,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:32,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:59:33,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:59:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1968 backedges. 69 proven. 1292 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-12-13 11:59:33,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:33,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:59:33,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:59:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1968 backedges. 57 proven. 1259 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-12-13 11:59:34,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117605154] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:34,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:34,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 44] total 88 [2022-12-13 11:59:34,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892133291] [2022-12-13 11:59:34,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:34,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-12-13 11:59:34,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-12-13 11:59:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=7302, Unknown=0, NotChecked=0, Total=7656 [2022-12-13 11:59:34,110 INFO L87 Difference]: Start difference. First operand 224 states and 227 transitions. Second operand has 88 states, 87 states have (on average 3.1494252873563218) internal successors, (274), 84 states have internal predecessors, (274), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-12-13 11:59:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:59:38,033 INFO L93 Difference]: Finished difference Result 320 states and 326 transitions. [2022-12-13 11:59:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-13 11:59:38,033 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 3.1494252873563218) internal successors, (274), 84 states have internal predecessors, (274), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) Word has length 231 [2022-12-13 11:59:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:59:38,034 INFO L225 Difference]: With dead ends: 320 [2022-12-13 11:59:38,034 INFO L226 Difference]: Without dead ends: 318 [2022-12-13 11:59:38,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 455 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5882 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1103, Invalid=20653, Unknown=0, NotChecked=0, Total=21756 [2022-12-13 11:59:38,035 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 474 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 7191 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 7287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 7191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:59:38,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 3202 Invalid, 7287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 7191 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 11:59:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-12-13 11:59:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 233. [2022-12-13 11:59:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 193 states have (on average 1.0155440414507773) internal successors, (196), 193 states have internal predecessors, (196), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-12-13 11:59:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 238 transitions. [2022-12-13 11:59:38,176 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 238 transitions. Word has length 231 [2022-12-13 11:59:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:59:38,176 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 238 transitions. [2022-12-13 11:59:38,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 3.1494252873563218) internal successors, (274), 84 states have internal predecessors, (274), 38 states have call successors, (39), 1 states have call predecessors, (39), 2 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-12-13 11:59:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 238 transitions. [2022-12-13 11:59:38,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-13 11:59:38,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:59:38,177 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:38,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-12-13 11:59:38,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-12-13 11:59:38,378 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:59:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash -75101871, now seen corresponding path program 53 times [2022-12-13 11:59:38,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:59:38,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323042006] [2022-12-13 11:59:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:59:38,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:59:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:59:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:59:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:59:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:59:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:59:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:59:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:59:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:59:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:59:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:59:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:59:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:59:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:59:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:59:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:59:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:59:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:59:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:59:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:59:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:59:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2038 backedges. 579 proven. 699 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-12-13 11:59:39,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:59:39,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323042006] [2022-12-13 11:59:39,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323042006] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:59:39,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854006809] [2022-12-13 11:59:39,263 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 11:59:39,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:39,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:39,264 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:59:39,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-12-13 11:59:39,632 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-12-13 11:59:39,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:59:39,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 11:59:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2038 backedges. 648 proven. 630 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-12-13 11:59:40,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2038 backedges. 648 proven. 630 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-12-13 11:59:40,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854006809] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:40,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:40,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2022-12-13 11:59:40,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235435960] [2022-12-13 11:59:40,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:40,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-12-13 11:59:40,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:40,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-12-13 11:59:40,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2022-12-13 11:59:40,810 INFO L87 Difference]: Start difference. First operand 233 states and 238 transitions. Second operand has 62 states, 62 states have (on average 3.564516129032258) internal successors, (221), 62 states have internal predecessors, (221), 20 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-13 11:59:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:59:41,501 INFO L93 Difference]: Finished difference Result 325 states and 331 transitions. [2022-12-13 11:59:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 11:59:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.564516129032258) internal successors, (221), 62 states have internal predecessors, (221), 20 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) Word has length 235 [2022-12-13 11:59:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:59:41,502 INFO L225 Difference]: With dead ends: 325 [2022-12-13 11:59:41,502 INFO L226 Difference]: Without dead ends: 245 [2022-12-13 11:59:41,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 451 SyntacticMatches, 38 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1512, Invalid=4968, Unknown=0, NotChecked=0, Total=6480 [2022-12-13 11:59:41,503 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 277 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:59:41,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 566 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:59:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-12-13 11:59:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 228. [2022-12-13 11:59:41,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 21 states have call successors, (21), 18 states have call predecessors, (21), 18 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-12-13 11:59:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 232 transitions. [2022-12-13 11:59:41,622 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 232 transitions. Word has length 235 [2022-12-13 11:59:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:59:41,622 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 232 transitions. [2022-12-13 11:59:41,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.564516129032258) internal successors, (221), 62 states have internal predecessors, (221), 20 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2022-12-13 11:59:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 232 transitions. [2022-12-13 11:59:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-12-13 11:59:41,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:59:41,623 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:41,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-12-13 11:59:41,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-12-13 11:59:41,824 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:59:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1642868194, now seen corresponding path program 54 times [2022-12-13 11:59:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:59:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169856279] [2022-12-13 11:59:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:59:41,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:59:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:59:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:59:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:59:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:59:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:59:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:59:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:59:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:59:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:59:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:59:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:59:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:59:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:59:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:59:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:59:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:59:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:59:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:59:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:59:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:59:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:59:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 57 proven. 1338 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-12-13 11:59:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:59:43,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169856279] [2022-12-13 11:59:43,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169856279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:59:43,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868049808] [2022-12-13 11:59:43,436 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 11:59:43,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:43,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:43,437 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:59:43,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-12-13 11:59:44,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-12-13 11:59:44,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:59:44,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-13 11:59:44,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:45,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 11:59:47,560 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 11:59:47,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 11:59:48,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 11:59:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 131 proven. 1338 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-12-13 11:59:48,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:48,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 11:59:48,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 11:59:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2121 backedges. 57 proven. 1338 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-12-13 11:59:48,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868049808] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:48,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:48,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 88 [2022-12-13 11:59:48,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93313686] [2022-12-13 11:59:48,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:48,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-12-13 11:59:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:48,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-12-13 11:59:48,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=7320, Unknown=1, NotChecked=0, Total=7656 [2022-12-13 11:59:48,918 INFO L87 Difference]: Start difference. First operand 228 states and 232 transitions. Second operand has 88 states, 88 states have (on average 3.1363636363636362) internal successors, (276), 84 states have internal predecessors, (276), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2022-12-13 11:59:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:59:55,253 INFO L93 Difference]: Finished difference Result 241 states and 244 transitions. [2022-12-13 11:59:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:59:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 3.1363636363636362) internal successors, (276), 84 states have internal predecessors, (276), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) Word has length 239 [2022-12-13 11:59:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:59:55,254 INFO L225 Difference]: With dead ends: 241 [2022-12-13 11:59:55,254 INFO L226 Difference]: Without dead ends: 239 [2022-12-13 11:59:55,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 469 SyntacticMatches, 9 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4752 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=888, Invalid=16667, Unknown=1, NotChecked=0, Total=17556 [2022-12-13 11:59:55,255 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 297 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 7287 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 7350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 7287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:59:55,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 2860 Invalid, 7350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 7287 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 11:59:55,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-13 11:59:55,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2022-12-13 11:59:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 195 states have internal predecessors, (197), 21 states have call successors, (21), 19 states have call predecessors, (21), 19 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-12-13 11:59:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 239 transitions. [2022-12-13 11:59:55,382 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 239 transitions. Word has length 239 [2022-12-13 11:59:55,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:59:55,382 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 239 transitions. [2022-12-13 11:59:55,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 3.1363636363636362) internal successors, (276), 84 states have internal predecessors, (276), 39 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (41), 41 states have call predecessors, (41), 39 states have call successors, (41) [2022-12-13 11:59:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 239 transitions. [2022-12-13 11:59:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-12-13 11:59:55,383 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:59:55,383 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 19, 19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:59:55,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-12-13 11:59:55,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-12-13 11:59:55,583 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:59:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:59:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash -161230828, now seen corresponding path program 55 times [2022-12-13 11:59:55,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:59:55,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624361475] [2022-12-13 11:59:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:59:55,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:59:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 11:59:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 11:59:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:59:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 11:59:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 11:59:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 11:59:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:59:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 11:59:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 11:59:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 11:59:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:59:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:59:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:59:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:59:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:59:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:59:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:59:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:59:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:59:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:59:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:59:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2191 backedges. 60 proven. 1405 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-12-13 11:59:57,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:59:57,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624361475] [2022-12-13 11:59:57,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624361475] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:59:57,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121417452] [2022-12-13 11:59:57,067 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 11:59:57,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:59:57,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:59:57,068 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:59:57,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-12-13 11:59:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:59:57,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-13 11:59:57,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:59:58,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 11:59:59,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 11:59:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2191 backedges. 99 proven. 1414 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2022-12-13 11:59:59,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:59:59,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 11:59:59,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 11:59:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2191 backedges. 60 proven. 1405 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-12-13 11:59:59,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121417452] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:59:59,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:59:59,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 46] total 92 [2022-12-13 11:59:59,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979627411] [2022-12-13 11:59:59,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:59:59,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-12-13 11:59:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:59:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-12-13 11:59:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=8001, Unknown=0, NotChecked=0, Total=8372 [2022-12-13 11:59:59,926 INFO L87 Difference]: Start difference. First operand 236 states and 239 transitions. Second operand has 92 states, 91 states have (on average 3.1648351648351647) internal successors, (288), 88 states have internal predecessors, (288), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2022-12-13 12:00:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:04,436 INFO L93 Difference]: Finished difference Result 336 states and 342 transitions. [2022-12-13 12:00:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-12-13 12:00:04,436 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 3.1648351648351647) internal successors, (288), 88 states have internal predecessors, (288), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) Word has length 243 [2022-12-13 12:00:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:04,438 INFO L225 Difference]: With dead ends: 336 [2022-12-13 12:00:04,438 INFO L226 Difference]: Without dead ends: 334 [2022-12-13 12:00:04,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 479 SyntacticMatches, 4 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6480 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1158, Invalid=22712, Unknown=0, NotChecked=0, Total=23870 [2022-12-13 12:00:04,439 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 438 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 7075 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 7174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 7075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:04,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 3113 Invalid, 7174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 7075 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 12:00:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-12-13 12:00:04,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 245. [2022-12-13 12:00:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 203 states have (on average 1.0147783251231528) internal successors, (206), 203 states have internal predecessors, (206), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 12:00:04,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 250 transitions. [2022-12-13 12:00:04,579 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 250 transitions. Word has length 243 [2022-12-13 12:00:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:04,579 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 250 transitions. [2022-12-13 12:00:04,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 3.1648351648351647) internal successors, (288), 88 states have internal predecessors, (288), 40 states have call successors, (41), 1 states have call predecessors, (41), 2 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2022-12-13 12:00:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 250 transitions. [2022-12-13 12:00:04,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-12-13 12:00:04,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:04,580 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:04,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-12-13 12:00:04,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:04,781 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:04,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:04,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1980243190, now seen corresponding path program 56 times [2022-12-13 12:00:04,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:04,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570356028] [2022-12-13 12:00:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:04,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:00:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:00:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:00:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:00:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:00:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:00:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:00:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:00:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:00:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:00:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:00:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:00:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:00:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:00:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:00:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:00:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:00:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:00:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:00:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:00:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:00:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 649 proven. 776 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-12-13 12:00:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570356028] [2022-12-13 12:00:05,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570356028] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930947620] [2022-12-13 12:00:05,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:00:05,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:05,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:05,717 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:05,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-12-13 12:00:05,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:00:05,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:00:05,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 12:00:05,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 722 proven. 703 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-12-13 12:00:06,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 722 proven. 703 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2022-12-13 12:00:06,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930947620] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:06,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:00:06,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2022-12-13 12:00:06,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863616935] [2022-12-13 12:00:06,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:06,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-13 12:00:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-13 12:00:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2022-12-13 12:00:06,896 INFO L87 Difference]: Start difference. First operand 245 states and 250 transitions. Second operand has 65 states, 65 states have (on average 3.5692307692307694) internal successors, (232), 65 states have internal predecessors, (232), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2022-12-13 12:00:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:07,669 INFO L93 Difference]: Finished difference Result 341 states and 347 transitions. [2022-12-13 12:00:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 12:00:07,670 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.5692307692307694) internal successors, (232), 65 states have internal predecessors, (232), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) Word has length 247 [2022-12-13 12:00:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:07,671 INFO L225 Difference]: With dead ends: 341 [2022-12-13 12:00:07,671 INFO L226 Difference]: Without dead ends: 257 [2022-12-13 12:00:07,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 474 SyntacticMatches, 40 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1661, Invalid=5479, Unknown=0, NotChecked=0, Total=7140 [2022-12-13 12:00:07,672 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 381 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:07,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 528 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:00:07,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-12-13 12:00:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 240. [2022-12-13 12:00:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 198 states have (on average 1.0101010101010102) internal successors, (200), 198 states have internal predecessors, (200), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 12:00:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 244 transitions. [2022-12-13 12:00:07,808 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 244 transitions. Word has length 247 [2022-12-13 12:00:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:07,808 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 244 transitions. [2022-12-13 12:00:07,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.5692307692307694) internal successors, (232), 65 states have internal predecessors, (232), 21 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2022-12-13 12:00:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 244 transitions. [2022-12-13 12:00:07,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-12-13 12:00:07,809 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:07,809 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:07,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-12-13 12:00:08,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:08,009 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:08,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1573116969, now seen corresponding path program 57 times [2022-12-13 12:00:08,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:08,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684031287] [2022-12-13 12:00:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:08,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:00:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:00:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:00:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:00:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:00:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:00:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:00:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:00:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:00:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:00:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:00:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:00:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:00:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:00:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:00:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:00:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:00:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:00:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:00:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:00:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:00:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:00:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 60 proven. 1488 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-12-13 12:00:09,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:09,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684031287] [2022-12-13 12:00:09,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684031287] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:09,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875354777] [2022-12-13 12:00:09,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:00:09,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:09,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:09,684 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:09,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-12-13 12:00:11,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-12-13 12:00:11,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:00:11,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 99 conjunts are in the unsatisfiable core [2022-12-13 12:00:11,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:12,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:00:15,165 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 12:00:15,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 12:00:15,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:00:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 138 proven. 1488 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-12-13 12:00:16,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:16,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:00:16,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:00:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 60 proven. 1488 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-12-13 12:00:16,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875354777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:16,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:00:16,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 92 [2022-12-13 12:00:16,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844024438] [2022-12-13 12:00:16,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:16,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-12-13 12:00:16,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:16,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-12-13 12:00:16,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=8020, Unknown=1, NotChecked=0, Total=8372 [2022-12-13 12:00:16,579 INFO L87 Difference]: Start difference. First operand 240 states and 244 transitions. Second operand has 92 states, 92 states have (on average 3.152173913043478) internal successors, (290), 88 states have internal predecessors, (290), 41 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (43), 43 states have call predecessors, (43), 41 states have call successors, (43) [2022-12-13 12:00:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:20,854 INFO L93 Difference]: Finished difference Result 253 states and 256 transitions. [2022-12-13 12:00:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-13 12:00:20,855 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.152173913043478) internal successors, (290), 88 states have internal predecessors, (290), 41 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (43), 43 states have call predecessors, (43), 41 states have call successors, (43) Word has length 251 [2022-12-13 12:00:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:20,855 INFO L225 Difference]: With dead ends: 253 [2022-12-13 12:00:20,855 INFO L226 Difference]: Without dead ends: 251 [2022-12-13 12:00:20,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 493 SyntacticMatches, 9 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5199 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=930, Invalid=18251, Unknown=1, NotChecked=0, Total=19182 [2022-12-13 12:00:20,857 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 249 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 7868 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 7926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 7868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:20,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 3217 Invalid, 7926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 7868 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 12:00:20,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-12-13 12:00:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 248. [2022-12-13 12:00:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 205 states have (on average 1.0097560975609756) internal successors, (207), 205 states have internal predecessors, (207), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 12:00:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 251 transitions. [2022-12-13 12:00:20,993 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 251 transitions. Word has length 251 [2022-12-13 12:00:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:20,993 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 251 transitions. [2022-12-13 12:00:20,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.152173913043478) internal successors, (290), 88 states have internal predecessors, (290), 41 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (43), 43 states have call predecessors, (43), 41 states have call successors, (43) [2022-12-13 12:00:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 251 transitions. [2022-12-13 12:00:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-12-13 12:00:20,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:20,994 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:21,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-12-13 12:00:21,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:21,195 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 640326989, now seen corresponding path program 58 times [2022-12-13 12:00:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:21,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776955868] [2022-12-13 12:00:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:00:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:00:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:00:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:00:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:00:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:00:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:00:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:00:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:00:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:00:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:00:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:00:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:00:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:00:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:00:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:00:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:00:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:00:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:00:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:00:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:00:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:00:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 63 proven. 1559 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-12-13 12:00:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:22,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776955868] [2022-12-13 12:00:22,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776955868] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:22,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940539617] [2022-12-13 12:00:22,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:00:22,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:22,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:22,877 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:22,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-12-13 12:00:23,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:00:23,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:00:23,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 107 conjunts are in the unsatisfiable core [2022-12-13 12:00:23,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:24,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:00:25,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:00:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 63 proven. 1559 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-12-13 12:00:25,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:25,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:00:25,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:00:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 63 proven. 1559 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-12-13 12:00:26,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940539617] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:26,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:00:26,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50, 49] total 98 [2022-12-13 12:00:26,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977107005] [2022-12-13 12:00:26,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:26,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-12-13 12:00:26,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-12-13 12:00:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=9104, Unknown=0, NotChecked=0, Total=9506 [2022-12-13 12:00:26,372 INFO L87 Difference]: Start difference. First operand 248 states and 251 transitions. Second operand has 98 states, 97 states have (on average 3.11340206185567) internal successors, (302), 94 states have internal predecessors, (302), 42 states have call successors, (43), 1 states have call predecessors, (43), 2 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-12-13 12:00:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:31,523 INFO L93 Difference]: Finished difference Result 352 states and 358 transitions. [2022-12-13 12:00:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-12-13 12:00:31,524 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 3.11340206185567) internal successors, (302), 94 states have internal predecessors, (302), 42 states have call successors, (43), 1 states have call predecessors, (43), 2 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) Word has length 255 [2022-12-13 12:00:31,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:31,526 INFO L225 Difference]: With dead ends: 352 [2022-12-13 12:00:31,526 INFO L226 Difference]: Without dead ends: 350 [2022-12-13 12:00:31,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 501 SyntacticMatches, 4 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7860 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1300, Invalid=27092, Unknown=0, NotChecked=0, Total=28392 [2022-12-13 12:00:31,527 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 419 mSDsluCounter, 4169 mSDsCounter, 0 mSdLazyCounter, 9842 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 9944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 9842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:31,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 4243 Invalid, 9944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 9842 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 12:00:31,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-12-13 12:00:31,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 257. [2022-12-13 12:00:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 213 states have (on average 1.0140845070422535) internal successors, (216), 213 states have internal predecessors, (216), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 12:00:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 262 transitions. [2022-12-13 12:00:31,672 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 262 transitions. Word has length 255 [2022-12-13 12:00:31,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:31,673 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 262 transitions. [2022-12-13 12:00:31,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 3.11340206185567) internal successors, (302), 94 states have internal predecessors, (302), 42 states have call successors, (43), 1 states have call predecessors, (43), 2 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2022-12-13 12:00:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 262 transitions. [2022-12-13 12:00:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-12-13 12:00:31,674 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:31,674 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:31,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-12-13 12:00:31,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:31,875 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1296864317, now seen corresponding path program 59 times [2022-12-13 12:00:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:31,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518494148] [2022-12-13 12:00:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:00:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:00:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:00:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:00:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:00:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:00:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:00:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:00:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:00:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:00:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:00:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:00:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:00:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:00:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:00:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:00:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:00:32,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:00:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:00:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:00:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:00:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:00:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 723 proven. 857 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-12-13 12:00:32,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:32,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518494148] [2022-12-13 12:00:32,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518494148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:32,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574173419] [2022-12-13 12:00:32,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:00:32,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:32,940 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:32,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-12-13 12:00:33,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-12-13 12:00:33,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:00:33,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 12:00:33,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:34,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 800 proven. 780 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-12-13 12:00:34,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2504 backedges. 800 proven. 780 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-12-13 12:00:34,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574173419] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:34,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:00:34,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2022-12-13 12:00:34,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820682648] [2022-12-13 12:00:34,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:34,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-12-13 12:00:34,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-12-13 12:00:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2022-12-13 12:00:34,869 INFO L87 Difference]: Start difference. First operand 257 states and 262 transitions. Second operand has 68 states, 68 states have (on average 3.573529411764706) internal successors, (243), 68 states have internal predecessors, (243), 22 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2022-12-13 12:00:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:35,878 INFO L93 Difference]: Finished difference Result 357 states and 363 transitions. [2022-12-13 12:00:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 12:00:35,878 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.573529411764706) internal successors, (243), 68 states have internal predecessors, (243), 22 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) Word has length 259 [2022-12-13 12:00:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:35,880 INFO L225 Difference]: With dead ends: 357 [2022-12-13 12:00:35,880 INFO L226 Difference]: Without dead ends: 269 [2022-12-13 12:00:35,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 497 SyntacticMatches, 42 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3660 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1817, Invalid=6015, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 12:00:35,881 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 262 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:35,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 494 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:00:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-12-13 12:00:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 252. [2022-12-13 12:00:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 208 states have internal predecessors, (210), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 12:00:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 256 transitions. [2022-12-13 12:00:36,024 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 256 transitions. Word has length 259 [2022-12-13 12:00:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:36,024 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 256 transitions. [2022-12-13 12:00:36,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.573529411764706) internal successors, (243), 68 states have internal predecessors, (243), 22 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2022-12-13 12:00:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 256 transitions. [2022-12-13 12:00:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-12-13 12:00:36,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:36,025 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:36,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-12-13 12:00:36,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-12-13 12:00:36,226 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:36,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -152279920, now seen corresponding path program 60 times [2022-12-13 12:00:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:36,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133952672] [2022-12-13 12:00:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:00:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:00:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:00:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:00:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:00:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:00:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:00:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:00:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:00:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:00:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:00:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:00:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:00:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:00:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:00:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:00:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:00:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:00:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:00:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:00:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:00:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:00:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:00:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2595 backedges. 63 proven. 1646 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-13 12:00:38,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133952672] [2022-12-13 12:00:38,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133952672] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:38,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273453698] [2022-12-13 12:00:38,121 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:00:38,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:38,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:38,122 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:38,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-12-13 12:00:39,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2022-12-13 12:00:39,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:00:39,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-13 12:00:39,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:40,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:00:40,930 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 12:00:40,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 12:00:41,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:00:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2595 backedges. 145 proven. 1646 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2022-12-13 12:00:41,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:42,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:00:42,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:00:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2595 backedges. 63 proven. 1646 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-13 12:00:42,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273453698] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:42,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:00:42,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 96 [2022-12-13 12:00:42,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47662438] [2022-12-13 12:00:42,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:42,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-13 12:00:42,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:42,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-13 12:00:42,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=8753, Unknown=0, NotChecked=0, Total=9120 [2022-12-13 12:00:42,411 INFO L87 Difference]: Start difference. First operand 252 states and 256 transitions. Second operand has 96 states, 96 states have (on average 3.1666666666666665) internal successors, (304), 92 states have internal predecessors, (304), 43 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (45), 45 states have call predecessors, (45), 43 states have call successors, (45) [2022-12-13 12:00:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:46,884 INFO L93 Difference]: Finished difference Result 265 states and 268 transitions. [2022-12-13 12:00:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-13 12:00:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.1666666666666665) internal successors, (304), 92 states have internal predecessors, (304), 43 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (45), 45 states have call predecessors, (45), 43 states have call successors, (45) Word has length 263 [2022-12-13 12:00:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:46,885 INFO L225 Difference]: With dead ends: 265 [2022-12-13 12:00:46,885 INFO L226 Difference]: Without dead ends: 263 [2022-12-13 12:00:46,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 517 SyntacticMatches, 9 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5666 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=972, Invalid=19908, Unknown=0, NotChecked=0, Total=20880 [2022-12-13 12:00:46,886 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 295 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 8701 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 3586 SdHoareTripleChecker+Invalid, 8765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 8701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:46,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 3586 Invalid, 8765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 8701 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 12:00:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-12-13 12:00:47,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 260. [2022-12-13 12:00:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 215 states have internal predecessors, (217), 23 states have call successors, (23), 21 states have call predecessors, (23), 21 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 12:00:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 263 transitions. [2022-12-13 12:00:47,028 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 263 transitions. Word has length 263 [2022-12-13 12:00:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:47,028 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 263 transitions. [2022-12-13 12:00:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.1666666666666665) internal successors, (304), 92 states have internal predecessors, (304), 43 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (45), 45 states have call predecessors, (45), 43 states have call successors, (45) [2022-12-13 12:00:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 263 transitions. [2022-12-13 12:00:47,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-12-13 12:00:47,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:47,029 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 21, 21, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:47,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-12-13 12:00:47,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-12-13 12:00:47,231 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash 854186374, now seen corresponding path program 61 times [2022-12-13 12:00:47,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:47,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196535066] [2022-12-13 12:00:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:00:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:00:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:00:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:00:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:00:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:00:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:00:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:00:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:00:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:00:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:00:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:00:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:00:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:00:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:00:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:00:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:00:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:00:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:00:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:00:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:00:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:00:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:00:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 66 proven. 1721 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-13 12:00:49,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:00:49,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196535066] [2022-12-13 12:00:49,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196535066] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:00:49,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306520967] [2022-12-13 12:00:49,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:00:49,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:49,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:00:49,188 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:00:49,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-12-13 12:00:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:00:49,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-13 12:00:49,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:00:51,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:00:52,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:00:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 108 proven. 1733 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-12-13 12:00:52,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:00:52,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:00:52,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:00:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 66 proven. 1721 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-13 12:00:53,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306520967] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:00:53,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:00:53,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 50] total 102 [2022-12-13 12:00:53,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256884632] [2022-12-13 12:00:53,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:00:53,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-12-13 12:00:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:00:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-12-13 12:00:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=9888, Unknown=0, NotChecked=0, Total=10302 [2022-12-13 12:00:53,274 INFO L87 Difference]: Start difference. First operand 260 states and 263 transitions. Second operand has 102 states, 100 states have (on average 3.17) internal successors, (317), 97 states have internal predecessors, (317), 45 states have call successors, (46), 1 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 45 states have call successors, (46) [2022-12-13 12:00:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:00:58,762 INFO L93 Difference]: Finished difference Result 368 states and 374 transitions. [2022-12-13 12:00:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-13 12:00:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 100 states have (on average 3.17) internal successors, (317), 97 states have internal predecessors, (317), 45 states have call successors, (46), 1 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 45 states have call successors, (46) Word has length 267 [2022-12-13 12:00:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:00:58,763 INFO L225 Difference]: With dead ends: 368 [2022-12-13 12:00:58,763 INFO L226 Difference]: Without dead ends: 366 [2022-12-13 12:00:58,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 527 SyntacticMatches, 3 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7893 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1282, Invalid=27788, Unknown=0, NotChecked=0, Total=29070 [2022-12-13 12:00:58,765 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 462 mSDsluCounter, 4637 mSDsCounter, 0 mSdLazyCounter, 9821 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 9931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 9821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 12:00:58,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 4715 Invalid, 9931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 9821 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 12:00:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-12-13 12:00:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 269. [2022-12-13 12:00:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 223 states have (on average 1.0134529147982063) internal successors, (226), 223 states have internal predecessors, (226), 24 states have call successors, (24), 21 states have call predecessors, (24), 21 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 12:00:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 274 transitions. [2022-12-13 12:00:58,927 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 274 transitions. Word has length 267 [2022-12-13 12:00:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:00:58,927 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 274 transitions. [2022-12-13 12:00:58,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 100 states have (on average 3.17) internal successors, (317), 97 states have internal predecessors, (317), 45 states have call successors, (46), 1 states have call predecessors, (46), 2 states have return successors, (46), 46 states have call predecessors, (46), 45 states have call successors, (46) [2022-12-13 12:00:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 274 transitions. [2022-12-13 12:00:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-12-13 12:00:58,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:00:58,928 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:00:58,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-12-13 12:00:59,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:00:59,129 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:00:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:00:59,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1734876292, now seen corresponding path program 62 times [2022-12-13 12:00:59,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:00:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124927233] [2022-12-13 12:00:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:00:59,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:00:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:01:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:01:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:01:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:01:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:01:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:01:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:01:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:01:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:01:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:01:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:01:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:01:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:01:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:01:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:01:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:01:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:01:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:01:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:01:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:01:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:01:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:01:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:01:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2755 backedges. 801 proven. 942 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-12-13 12:01:00,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124927233] [2022-12-13 12:01:00,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124927233] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:00,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545761819] [2022-12-13 12:01:00,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:01:00,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:00,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:00,111 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:00,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-12-13 12:01:00,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:01:00,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:00,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-13 12:01:00,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2755 backedges. 882 proven. 861 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-12-13 12:01:01,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2755 backedges. 882 proven. 861 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-12-13 12:01:01,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545761819] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:01,780 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:01,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2022-12-13 12:01:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708369414] [2022-12-13 12:01:01,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:01,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-12-13 12:01:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:01,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-12-13 12:01:01,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1155, Invalid=3815, Unknown=0, NotChecked=0, Total=4970 [2022-12-13 12:01:01,782 INFO L87 Difference]: Start difference. First operand 269 states and 274 transitions. Second operand has 71 states, 71 states have (on average 3.5774647887323945) internal successors, (254), 71 states have internal predecessors, (254), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2022-12-13 12:01:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:02,617 INFO L93 Difference]: Finished difference Result 373 states and 379 transitions. [2022-12-13 12:01:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 12:01:02,617 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.5774647887323945) internal successors, (254), 71 states have internal predecessors, (254), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) Word has length 271 [2022-12-13 12:01:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:02,618 INFO L225 Difference]: With dead ends: 373 [2022-12-13 12:01:02,618 INFO L226 Difference]: Without dead ends: 281 [2022-12-13 12:01:02,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 520 SyntacticMatches, 44 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1980, Invalid=6576, Unknown=0, NotChecked=0, Total=8556 [2022-12-13 12:01:02,619 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 328 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:02,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 536 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:01:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-12-13 12:01:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 264. [2022-12-13 12:01:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 218 states have (on average 1.0091743119266054) internal successors, (220), 218 states have internal predecessors, (220), 24 states have call successors, (24), 21 states have call predecessors, (24), 21 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 12:01:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 268 transitions. [2022-12-13 12:01:02,773 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 268 transitions. Word has length 271 [2022-12-13 12:01:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:02,773 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 268 transitions. [2022-12-13 12:01:02,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.5774647887323945) internal successors, (254), 71 states have internal predecessors, (254), 23 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 23 states have call predecessors, (24), 23 states have call successors, (24) [2022-12-13 12:01:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 268 transitions. [2022-12-13 12:01:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-13 12:01:02,774 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:02,774 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:02,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-12-13 12:01:02,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:02,975 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:02,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:02,976 INFO L85 PathProgramCache]: Analyzing trace with hash 813945929, now seen corresponding path program 63 times [2022-12-13 12:01:02,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:02,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618678590] [2022-12-13 12:01:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:02,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:01:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:01:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:01:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:01:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:01:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:01:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:01:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:01:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:01:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:01:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:01:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:01:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:01:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:01:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:01:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:01:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:01:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:01:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:01:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:01:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:01:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:01:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:01:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:01:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 66 proven. 1812 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-12-13 12:01:05,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:05,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618678590] [2022-12-13 12:01:05,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618678590] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:05,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893703180] [2022-12-13 12:01:05,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:01:05,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:05,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:05,209 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:05,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-12-13 12:01:09,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-12-13 12:01:09,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:09,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 107 conjunts are in the unsatisfiable core [2022-12-13 12:01:09,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:10,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:01:10,815 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 12:01:10,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 12:01:11,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:01:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 152 proven. 1812 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-12-13 12:01:12,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:12,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:01:12,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:01:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 66 proven. 1812 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-12-13 12:01:12,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893703180] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:12,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:12,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52, 52] total 102 [2022-12-13 12:01:12,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795188482] [2022-12-13 12:01:12,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:12,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-12-13 12:01:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-12-13 12:01:12,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=9910, Unknown=0, NotChecked=0, Total=10302 [2022-12-13 12:01:12,806 INFO L87 Difference]: Start difference. First operand 264 states and 268 transitions. Second operand has 102 states, 101 states have (on average 3.1584158415841586) internal successors, (319), 97 states have internal predecessors, (319), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (48), 48 states have call predecessors, (48), 46 states have call successors, (48) [2022-12-13 12:01:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:17,733 INFO L93 Difference]: Finished difference Result 277 states and 280 transitions. [2022-12-13 12:01:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-12-13 12:01:17,733 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 3.1584158415841586) internal successors, (319), 97 states have internal predecessors, (319), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (48), 48 states have call predecessors, (48), 46 states have call successors, (48) Word has length 275 [2022-12-13 12:01:17,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:17,734 INFO L225 Difference]: With dead ends: 277 [2022-12-13 12:01:17,734 INFO L226 Difference]: Without dead ends: 275 [2022-12-13 12:01:17,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 541 SyntacticMatches, 8 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6289 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1027, Invalid=22229, Unknown=0, NotChecked=0, Total=23256 [2022-12-13 12:01:17,735 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 255 mSDsluCounter, 4132 mSDsCounter, 0 mSdLazyCounter, 8722 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 8792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 8722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:17,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 4208 Invalid, 8792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 8722 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 12:01:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-12-13 12:01:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 272. [2022-12-13 12:01:17,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 225 states have (on average 1.008888888888889) internal successors, (227), 225 states have internal predecessors, (227), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-12-13 12:01:17,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 275 transitions. [2022-12-13 12:01:17,904 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 275 transitions. Word has length 275 [2022-12-13 12:01:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:17,904 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 275 transitions. [2022-12-13 12:01:17,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 3.1584158415841586) internal successors, (319), 97 states have internal predecessors, (319), 46 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (48), 48 states have call predecessors, (48), 46 states have call successors, (48) [2022-12-13 12:01:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 275 transitions. [2022-12-13 12:01:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-12-13 12:01:17,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:17,905 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:17,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-12-13 12:01:18,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-12-13 12:01:18,107 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash -278870849, now seen corresponding path program 64 times [2022-12-13 12:01:18,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:18,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065025425] [2022-12-13 12:01:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:18,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:01:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:01:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:01:19,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:01:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:01:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:01:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:01:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:01:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:01:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:01:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:01:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:01:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:01:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:01:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:01:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:01:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:01:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:01:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:01:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:01:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:01:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:01:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:01:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:01:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 69 proven. 1891 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-12-13 12:01:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:19,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065025425] [2022-12-13 12:01:19,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065025425] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266481570] [2022-12-13 12:01:19,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:01:19,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:19,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:19,896 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:19,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-12-13 12:01:20,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:01:20,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:20,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 115 conjunts are in the unsatisfiable core [2022-12-13 12:01:20,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:21,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:01:23,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:01:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 90 proven. 1927 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2022-12-13 12:01:23,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:23,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:01:23,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:01:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2932 backedges. 69 proven. 1891 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-12-13 12:01:23,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266481570] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:23,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:23,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 52] total 104 [2022-12-13 12:01:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397372936] [2022-12-13 12:01:23,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:23,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-12-13 12:01:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-12-13 12:01:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=10290, Unknown=0, NotChecked=0, Total=10712 [2022-12-13 12:01:23,985 INFO L87 Difference]: Start difference. First operand 272 states and 275 transitions. Second operand has 104 states, 103 states have (on average 3.203883495145631) internal successors, (330), 100 states have internal predecessors, (330), 46 states have call successors, (47), 1 states have call predecessors, (47), 2 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2022-12-13 12:01:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:29,298 INFO L93 Difference]: Finished difference Result 384 states and 390 transitions. [2022-12-13 12:01:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-13 12:01:29,299 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 3.203883495145631) internal successors, (330), 100 states have internal predecessors, (330), 46 states have call successors, (47), 1 states have call predecessors, (47), 2 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) Word has length 279 [2022-12-13 12:01:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:29,299 INFO L225 Difference]: With dead ends: 384 [2022-12-13 12:01:29,299 INFO L226 Difference]: Without dead ends: 382 [2022-12-13 12:01:29,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 551 SyntacticMatches, 4 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8448 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1323, Invalid=29477, Unknown=0, NotChecked=0, Total=30800 [2022-12-13 12:01:29,301 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 569 mSDsluCounter, 4345 mSDsCounter, 0 mSdLazyCounter, 9922 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 4426 SdHoareTripleChecker+Invalid, 10035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 9922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:29,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 4426 Invalid, 10035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 9922 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 12:01:29,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-12-13 12:01:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 281. [2022-12-13 12:01:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 233 states have (on average 1.0128755364806867) internal successors, (236), 233 states have internal predecessors, (236), 25 states have call successors, (25), 22 states have call predecessors, (25), 22 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 12:01:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 286 transitions. [2022-12-13 12:01:29,469 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 286 transitions. Word has length 279 [2022-12-13 12:01:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:29,469 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 286 transitions. [2022-12-13 12:01:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 3.203883495145631) internal successors, (330), 100 states have internal predecessors, (330), 46 states have call successors, (47), 1 states have call predecessors, (47), 2 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2022-12-13 12:01:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 286 transitions. [2022-12-13 12:01:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-12-13 12:01:29,470 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:29,470 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:29,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-12-13 12:01:29,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:29,671 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:29,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:29,672 INFO L85 PathProgramCache]: Analyzing trace with hash 482642485, now seen corresponding path program 65 times [2022-12-13 12:01:29,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:29,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826785753] [2022-12-13 12:01:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:29,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:01:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:01:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:01:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:01:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:01:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:01:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:01:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:01:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:01:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:01:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:01:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:01:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:01:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:01:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:01:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:01:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:01:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:01:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:01:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:01:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:01:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:01:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:01:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:01:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3018 backedges. 883 proven. 1031 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-12-13 12:01:30,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:30,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826785753] [2022-12-13 12:01:30,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826785753] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:30,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555361150] [2022-12-13 12:01:30,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:01:30,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:30,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:30,698 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:30,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-12-13 12:01:31,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-12-13 12:01:31,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:31,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 12:01:31,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3018 backedges. 968 proven. 946 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-12-13 12:01:31,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3018 backedges. 968 proven. 946 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-12-13 12:01:32,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555361150] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:32,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:32,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2022-12-13 12:01:32,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253051353] [2022-12-13 12:01:32,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:32,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-12-13 12:01:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-12-13 12:01:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1253, Invalid=4149, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 12:01:32,414 INFO L87 Difference]: Start difference. First operand 281 states and 286 transitions. Second operand has 74 states, 74 states have (on average 3.581081081081081) internal successors, (265), 74 states have internal predecessors, (265), 24 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2022-12-13 12:01:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:33,288 INFO L93 Difference]: Finished difference Result 389 states and 395 transitions. [2022-12-13 12:01:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-13 12:01:33,288 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.581081081081081) internal successors, (265), 74 states have internal predecessors, (265), 24 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) Word has length 283 [2022-12-13 12:01:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:33,289 INFO L225 Difference]: With dead ends: 389 [2022-12-13 12:01:33,289 INFO L226 Difference]: Without dead ends: 293 [2022-12-13 12:01:33,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 543 SyntacticMatches, 46 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4355 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2150, Invalid=7162, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 12:01:33,290 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 307 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:33,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 660 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:01:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-12-13 12:01:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 276. [2022-12-13 12:01:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 228 states have internal predecessors, (230), 25 states have call successors, (25), 22 states have call predecessors, (25), 22 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 12:01:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 280 transitions. [2022-12-13 12:01:33,454 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 280 transitions. Word has length 283 [2022-12-13 12:01:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:33,454 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 280 transitions. [2022-12-13 12:01:33,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.581081081081081) internal successors, (265), 74 states have internal predecessors, (265), 24 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2022-12-13 12:01:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 280 transitions. [2022-12-13 12:01:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-12-13 12:01:33,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:33,455 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:33,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-12-13 12:01:33,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-12-13 12:01:33,657 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:33,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash -241061118, now seen corresponding path program 66 times [2022-12-13 12:01:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:33,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163063626] [2022-12-13 12:01:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:33,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:01:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:01:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:01:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:01:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:01:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:01:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:01:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:01:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:01:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:01:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:01:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:01:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:01:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:01:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:01:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:01:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:01:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:01:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:01:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:01:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:01:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:01:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:01:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:01:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:01:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 69 proven. 1986 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-12-13 12:01:35,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:35,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163063626] [2022-12-13 12:01:35,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163063626] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:35,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237235458] [2022-12-13 12:01:35,709 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:01:35,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:35,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:35,709 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:35,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-12-13 12:01:37,671 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2022-12-13 12:01:37,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:37,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 111 conjunts are in the unsatisfiable core [2022-12-13 12:01:37,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:38,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:01:39,177 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 12:01:39,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 12:01:40,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:01:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 159 proven. 1986 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2022-12-13 12:01:40,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:40,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:01:40,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:01:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3117 backedges. 69 proven. 1986 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-12-13 12:01:40,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237235458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:40,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:40,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 104 [2022-12-13 12:01:40,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184016045] [2022-12-13 12:01:40,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:40,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-12-13 12:01:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:40,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-12-13 12:01:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=10313, Unknown=0, NotChecked=0, Total=10712 [2022-12-13 12:01:40,817 INFO L87 Difference]: Start difference. First operand 276 states and 280 transitions. Second operand has 104 states, 104 states have (on average 3.1923076923076925) internal successors, (332), 100 states have internal predecessors, (332), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2022-12-13 12:01:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:45,494 INFO L93 Difference]: Finished difference Result 289 states and 292 transitions. [2022-12-13 12:01:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-13 12:01:45,494 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.1923076923076925) internal successors, (332), 100 states have internal predecessors, (332), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) Word has length 287 [2022-12-13 12:01:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:45,495 INFO L225 Difference]: With dead ends: 289 [2022-12-13 12:01:45,495 INFO L226 Difference]: Without dead ends: 287 [2022-12-13 12:01:45,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 565 SyntacticMatches, 9 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6660 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1056, Invalid=23436, Unknown=0, NotChecked=0, Total=24492 [2022-12-13 12:01:45,496 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 305 mSDsluCounter, 4019 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 9533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:45,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 4098 Invalid, 9533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 12:01:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-13 12:01:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2022-12-13 12:01:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 235 states have (on average 1.0085106382978724) internal successors, (237), 235 states have internal predecessors, (237), 25 states have call successors, (25), 23 states have call predecessors, (25), 23 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-12-13 12:01:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 287 transitions. [2022-12-13 12:01:45,665 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 287 transitions. Word has length 287 [2022-12-13 12:01:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:45,665 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 287 transitions. [2022-12-13 12:01:45,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.1923076923076925) internal successors, (332), 100 states have internal predecessors, (332), 47 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (49), 49 states have call predecessors, (49), 47 states have call successors, (49) [2022-12-13 12:01:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 287 transitions. [2022-12-13 12:01:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-12-13 12:01:45,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:45,666 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 23, 23, 23, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:45,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-12-13 12:01:45,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:45,867 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash 479108856, now seen corresponding path program 67 times [2022-12-13 12:01:45,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:45,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482191754] [2022-12-13 12:01:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:45,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:01:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:01:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:01:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:01:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:01:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:01:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:01:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:01:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:01:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:01:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:01:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:01:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:01:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:01:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:01:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:01:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:01:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:01:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:01:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:01:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:01:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:01:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:01:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:01:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:01:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3203 backedges. 72 proven. 2069 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-12-13 12:01:47,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482191754] [2022-12-13 12:01:47,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482191754] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621025788] [2022-12-13 12:01:47,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:01:47,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:47,769 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:47,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-12-13 12:01:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:48,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 119 conjunts are in the unsatisfiable core [2022-12-13 12:01:48,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:49,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:01:50,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:01:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3203 backedges. 117 proven. 2084 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-12-13 12:01:50,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:50,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:01:50,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:01:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3203 backedges. 72 proven. 2069 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-12-13 12:01:51,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621025788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:51,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:51,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 54] total 108 [2022-12-13 12:01:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491291281] [2022-12-13 12:01:51,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:51,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-12-13 12:01:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-12-13 12:01:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=11117, Unknown=0, NotChecked=0, Total=11556 [2022-12-13 12:01:51,303 INFO L87 Difference]: Start difference. First operand 284 states and 287 transitions. Second operand has 108 states, 107 states have (on average 3.2149532710280373) internal successors, (344), 104 states have internal predecessors, (344), 48 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 48 states have call successors, (49) [2022-12-13 12:01:57,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:01:57,311 INFO L93 Difference]: Finished difference Result 400 states and 406 transitions. [2022-12-13 12:01:57,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-12-13 12:01:57,311 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 3.2149532710280373) internal successors, (344), 104 states have internal predecessors, (344), 48 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 48 states have call successors, (49) Word has length 291 [2022-12-13 12:01:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:01:57,312 INFO L225 Difference]: With dead ends: 400 [2022-12-13 12:01:57,312 INFO L226 Difference]: Without dead ends: 398 [2022-12-13 12:01:57,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 575 SyntacticMatches, 4 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9162 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1378, Invalid=31928, Unknown=0, NotChecked=0, Total=33306 [2022-12-13 12:01:57,314 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 426 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 9957 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 10080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:01:57,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 5115 Invalid, 10080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 9957 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 12:01:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-12-13 12:01:57,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 293. [2022-12-13 12:01:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 243 states have (on average 1.0123456790123457) internal successors, (246), 243 states have internal predecessors, (246), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-12-13 12:01:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 298 transitions. [2022-12-13 12:01:57,500 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 298 transitions. Word has length 291 [2022-12-13 12:01:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:01:57,500 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 298 transitions. [2022-12-13 12:01:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 3.2149532710280373) internal successors, (344), 104 states have internal predecessors, (344), 48 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 49 states have call predecessors, (49), 48 states have call successors, (49) [2022-12-13 12:01:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 298 transitions. [2022-12-13 12:01:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2022-12-13 12:01:57,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:01:57,501 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:57,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-12-13 12:01:57,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:57,702 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:01:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -291987474, now seen corresponding path program 68 times [2022-12-13 12:01:57,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619404515] [2022-12-13 12:01:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:57,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:01:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:01:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:01:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:01:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:01:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:01:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:01:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:01:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:01:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:01:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:01:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:01:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:01:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:01:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:01:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:01:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:01:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:01:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:01:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:01:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:01:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:01:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:01:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:01:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:01:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 969 proven. 1124 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-12-13 12:01:58,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:58,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619404515] [2022-12-13 12:01:58,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619404515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:58,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327597188] [2022-12-13 12:01:58,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:01:58,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:58,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:58,960 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:58,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-12-13 12:01:59,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:01:59,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:59,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-13 12:01:59,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 1058 proven. 1035 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-12-13 12:01:59,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3293 backedges. 1058 proven. 1035 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-12-13 12:02:00,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327597188] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:00,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:00,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2022-12-13 12:02:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166702778] [2022-12-13 12:02:00,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:00,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-12-13 12:02:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:00,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-12-13 12:02:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1355, Invalid=4497, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 12:02:00,494 INFO L87 Difference]: Start difference. First operand 293 states and 298 transitions. Second operand has 77 states, 77 states have (on average 3.5844155844155843) internal successors, (276), 77 states have internal predecessors, (276), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-12-13 12:02:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:01,595 INFO L93 Difference]: Finished difference Result 405 states and 411 transitions. [2022-12-13 12:02:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-13 12:02:01,595 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.5844155844155843) internal successors, (276), 77 states have internal predecessors, (276), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) Word has length 295 [2022-12-13 12:02:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:01,597 INFO L225 Difference]: With dead ends: 405 [2022-12-13 12:02:01,597 INFO L226 Difference]: Without dead ends: 305 [2022-12-13 12:02:01,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 566 SyntacticMatches, 48 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4725 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2327, Invalid=7773, Unknown=0, NotChecked=0, Total=10100 [2022-12-13 12:02:01,598 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 396 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:01,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 469 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:02:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-12-13 12:02:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 288. [2022-12-13 12:02:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 238 states have internal predecessors, (240), 26 states have call successors, (26), 23 states have call predecessors, (26), 23 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-12-13 12:02:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 292 transitions. [2022-12-13 12:02:01,781 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 292 transitions. Word has length 295 [2022-12-13 12:02:01,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:01,781 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 292 transitions. [2022-12-13 12:02:01,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.5844155844155843) internal successors, (276), 77 states have internal predecessors, (276), 25 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2022-12-13 12:02:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 292 transitions. [2022-12-13 12:02:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-12-13 12:02:01,782 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:01,782 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:01,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-12-13 12:02:01,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:01,983 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash -81444677, now seen corresponding path program 69 times [2022-12-13 12:02:01,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:01,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737412191] [2022-12-13 12:02:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:02:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:02:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:02:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:02:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:02:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:02:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:02:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:02:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:02:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:02:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:02:04,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:02:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:02:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:02:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:02:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:02:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:02:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:02:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:02:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:02:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:02:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:02:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:02:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:02:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:02:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:02:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:04,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 72 proven. 2168 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-12-13 12:02:04,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:04,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737412191] [2022-12-13 12:02:04,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737412191] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:02:04,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164726464] [2022-12-13 12:02:04,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:02:04,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:04,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:02:04,376 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:02:04,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-12-13 12:02:07,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2022-12-13 12:02:07,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:02:07,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 116 conjunts are in the unsatisfiable core [2022-12-13 12:02:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:08,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:02:11,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 12:02:12,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:02:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 166 proven. 2168 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2022-12-13 12:02:12,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:12,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2022-12-13 12:02:12,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 12:02:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3396 backedges. 72 proven. 2168 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-12-13 12:02:13,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164726464] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:13,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:13,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 108 [2022-12-13 12:02:13,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901284368] [2022-12-13 12:02:13,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:13,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-12-13 12:02:13,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-12-13 12:02:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=11119, Unknown=1, NotChecked=0, Total=11556 [2022-12-13 12:02:13,178 INFO L87 Difference]: Start difference. First operand 288 states and 292 transitions. Second operand has 108 states, 108 states have (on average 3.2037037037037037) internal successors, (346), 104 states have internal predecessors, (346), 49 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (51), 51 states have call predecessors, (51), 49 states have call successors, (51) [2022-12-13 12:02:21,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:02:22,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:22,319 INFO L93 Difference]: Finished difference Result 435 states and 445 transitions. [2022-12-13 12:02:22,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-12-13 12:02:22,319 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 3.2037037037037037) internal successors, (346), 104 states have internal predecessors, (346), 49 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (51), 51 states have call predecessors, (51), 49 states have call successors, (51) Word has length 299 [2022-12-13 12:02:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:22,320 INFO L225 Difference]: With dead ends: 435 [2022-12-13 12:02:22,320 INFO L226 Difference]: Without dead ends: 433 [2022-12-13 12:02:22,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 589 SyntacticMatches, 9 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10722 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1681, Invalid=35374, Unknown=1, NotChecked=0, Total=37056 [2022-12-13 12:02:22,322 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 522 mSDsluCounter, 5763 mSDsCounter, 0 mSdLazyCounter, 12256 mSolverCounterSat, 144 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 5847 SdHoareTripleChecker+Invalid, 12401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 12256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:22,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 5847 Invalid, 12401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 12256 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 12:02:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-12-13 12:02:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 310. [2022-12-13 12:02:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 255 states have (on average 1.0196078431372548) internal successors, (260), 256 states have internal predecessors, (260), 30 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:02:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 320 transitions. [2022-12-13 12:02:22,525 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 320 transitions. Word has length 299 [2022-12-13 12:02:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:22,525 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 320 transitions. [2022-12-13 12:02:22,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 3.2037037037037037) internal successors, (346), 104 states have internal predecessors, (346), 49 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (51), 51 states have call predecessors, (51), 49 states have call successors, (51) [2022-12-13 12:02:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 320 transitions. [2022-12-13 12:02:22,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-12-13 12:02:22,526 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:22,526 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 24, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:22,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-12-13 12:02:22,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-12-13 12:02:22,727 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2041751601, now seen corresponding path program 70 times [2022-12-13 12:02:22,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:22,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591221520] [2022-12-13 12:02:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:22,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:02:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:02:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:02:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:02:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:02:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:02:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:02:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:02:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:02:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:02:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:02:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:02:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:02:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:02:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:02:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:02:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:02:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:02:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:02:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:02:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:02:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:02:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:02:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:02:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:02:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:02:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 75 proven. 2255 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-12-13 12:02:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:24,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591221520] [2022-12-13 12:02:24,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591221520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:02:24,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219124245] [2022-12-13 12:02:24,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:02:24,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:24,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:02:24,948 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:02:24,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-12-13 12:02:25,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:02:25,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:02:25,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 123 conjunts are in the unsatisfiable core [2022-12-13 12:02:25,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:27,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:02:28,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:02:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 75 proven. 2255 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-12-13 12:02:28,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:29,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:02:29,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:02:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 75 proven. 2255 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-12-13 12:02:29,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219124245] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:29,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:29,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 58, 57] total 114 [2022-12-13 12:02:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060052889] [2022-12-13 12:02:29,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:29,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-12-13 12:02:29,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-12-13 12:02:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=12412, Unknown=0, NotChecked=0, Total=12882 [2022-12-13 12:02:29,612 INFO L87 Difference]: Start difference. First operand 310 states and 320 transitions. Second operand has 114 states, 113 states have (on average 3.168141592920354) internal successors, (358), 110 states have internal predecessors, (358), 50 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) [2022-12-13 12:02:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:36,988 INFO L93 Difference]: Finished difference Result 516 states and 526 transitions. [2022-12-13 12:02:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-12-13 12:02:36,989 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 3.168141592920354) internal successors, (358), 110 states have internal predecessors, (358), 50 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) Word has length 303 [2022-12-13 12:02:36,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:36,991 INFO L225 Difference]: With dead ends: 516 [2022-12-13 12:02:36,991 INFO L226 Difference]: Without dead ends: 514 [2022-12-13 12:02:36,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 597 SyntacticMatches, 4 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10928 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1529, Invalid=37477, Unknown=0, NotChecked=0, Total=39006 [2022-12-13 12:02:36,993 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 562 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 12390 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 12522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 12390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:36,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 5661 Invalid, 12522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 12390 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 12:02:36,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-13 12:02:37,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 315. [2022-12-13 12:02:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 260 states have (on average 1.0192307692307692) internal successors, (265), 261 states have internal predecessors, (265), 30 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:02:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 325 transitions. [2022-12-13 12:02:37,216 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 325 transitions. Word has length 303 [2022-12-13 12:02:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:37,216 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 325 transitions. [2022-12-13 12:02:37,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 3.168141592920354) internal successors, (358), 110 states have internal predecessors, (358), 50 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (51), 51 states have call predecessors, (51), 50 states have call successors, (51) [2022-12-13 12:02:37,216 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 325 transitions. [2022-12-13 12:02:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-12-13 12:02:37,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:37,217 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:37,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-12-13 12:02:37,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:37,419 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1682742105, now seen corresponding path program 71 times [2022-12-13 12:02:37,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:37,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562573463] [2022-12-13 12:02:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:37,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:02:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:02:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:02:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:02:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:02:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:02:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:02:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:02:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:02:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:02:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:02:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:02:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:02:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:02:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:02:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:02:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:02:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:02:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:02:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:02:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:02:38,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:02:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:02:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:02:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:02:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:02:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3580 backedges. 1059 proven. 1221 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-12-13 12:02:38,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562573463] [2022-12-13 12:02:38,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562573463] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:02:38,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457644058] [2022-12-13 12:02:38,831 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:02:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:02:38,832 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:02:38,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-12-13 12:02:39,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-12-13 12:02:39,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:02:39,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-13 12:02:39,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3580 backedges. 1152 proven. 1128 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-12-13 12:02:40,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3580 backedges. 1152 proven. 1128 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2022-12-13 12:02:40,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457644058] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:40,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:40,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 80 [2022-12-13 12:02:40,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627386182] [2022-12-13 12:02:40,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:40,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-12-13 12:02:40,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:40,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-12-13 12:02:40,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=4859, Unknown=0, NotChecked=0, Total=6320 [2022-12-13 12:02:40,980 INFO L87 Difference]: Start difference. First operand 315 states and 325 transitions. Second operand has 80 states, 80 states have (on average 3.5875) internal successors, (287), 80 states have internal predecessors, (287), 26 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-12-13 12:02:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:42,255 INFO L93 Difference]: Finished difference Result 520 states and 530 transitions. [2022-12-13 12:02:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 12:02:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.5875) internal successors, (287), 80 states have internal predecessors, (287), 26 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 307 [2022-12-13 12:02:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:42,256 INFO L225 Difference]: With dead ends: 520 [2022-12-13 12:02:42,257 INFO L226 Difference]: Without dead ends: 416 [2022-12-13 12:02:42,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 589 SyntacticMatches, 50 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5110 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2511, Invalid=8409, Unknown=0, NotChecked=0, Total=10920 [2022-12-13 12:02:42,257 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 396 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:42,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 601 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:02:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-12-13 12:02:42,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 310. [2022-12-13 12:02:42,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 255 states have (on average 1.0156862745098039) internal successors, (259), 256 states have internal predecessors, (259), 30 states have call successors, (30), 24 states have call predecessors, (30), 24 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:02:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 319 transitions. [2022-12-13 12:02:42,465 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 319 transitions. Word has length 307 [2022-12-13 12:02:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:42,466 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 319 transitions. [2022-12-13 12:02:42,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.5875) internal successors, (287), 80 states have internal predecessors, (287), 26 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-12-13 12:02:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 319 transitions. [2022-12-13 12:02:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-12-13 12:02:42,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:42,467 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 25, 24, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:42,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-12-13 12:02:42,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:42,668 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1009630580, now seen corresponding path program 72 times [2022-12-13 12:02:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:42,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526711023] [2022-12-13 12:02:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:02:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:02:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:02:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:02:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:02:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:02:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:02:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:02:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:02:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:02:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:02:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:02:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:02:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:02:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:02:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:02:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:02:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:02:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:02:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:02:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:02:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:02:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:02:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:02:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:02:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:02:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:02:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3687 backedges. 75 proven. 2358 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-12-13 12:02:44,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:02:44,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526711023] [2022-12-13 12:02:44,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526711023] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:02:44,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599563372] [2022-12-13 12:02:44,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:02:44,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:02:44,999 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:02:45,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-12-13 12:02:46,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-12-13 12:02:46,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:02:46,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 126 conjunts are in the unsatisfiable core [2022-12-13 12:02:46,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:02:48,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:02:48,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:02:48,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:02:49,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:02:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3687 backedges. 188 proven. 2406 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2022-12-13 12:02:49,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:02:50,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:02:50,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:02:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3687 backedges. 75 proven. 2358 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-12-13 12:02:50,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599563372] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:50,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:50,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 59, 58] total 116 [2022-12-13 12:02:50,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934068136] [2022-12-13 12:02:50,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:50,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2022-12-13 12:02:50,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:50,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2022-12-13 12:02:50,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=12817, Unknown=0, NotChecked=0, Total=13340 [2022-12-13 12:02:50,699 INFO L87 Difference]: Start difference. First operand 310 states and 319 transitions. Second operand has 116 states, 115 states have (on average 3.1913043478260867) internal successors, (367), 112 states have internal predecessors, (367), 52 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (53), 53 states have call predecessors, (53), 52 states have call successors, (53) [2022-12-13 12:02:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:02:56,924 INFO L93 Difference]: Finished difference Result 419 states and 426 transitions. [2022-12-13 12:02:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-12-13 12:02:56,924 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 3.1913043478260867) internal successors, (367), 112 states have internal predecessors, (367), 52 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (53), 53 states have call predecessors, (53), 52 states have call successors, (53) Word has length 311 [2022-12-13 12:02:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:02:56,926 INFO L225 Difference]: With dead ends: 419 [2022-12-13 12:02:56,926 INFO L226 Difference]: Without dead ends: 417 [2022-12-13 12:02:56,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 611 SyntacticMatches, 7 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7863 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1274, Invalid=27796, Unknown=0, NotChecked=0, Total=29070 [2022-12-13 12:02:56,927 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 239 mSDsluCounter, 6425 mSDsCounter, 0 mSdLazyCounter, 13277 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 6514 SdHoareTripleChecker+Invalid, 13343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 13277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:02:56,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 6514 Invalid, 13343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 13277 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 12:02:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-12-13 12:02:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 412. [2022-12-13 12:02:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 355 states have (on average 1.0140845070422535) internal successors, (360), 356 states have internal predecessors, (360), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:02:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 420 transitions. [2022-12-13 12:02:57,278 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 420 transitions. Word has length 311 [2022-12-13 12:02:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:02:57,278 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 420 transitions. [2022-12-13 12:02:57,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 3.1913043478260867) internal successors, (367), 112 states have internal predecessors, (367), 52 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (53), 53 states have call predecessors, (53), 52 states have call successors, (53) [2022-12-13 12:02:57,278 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 420 transitions. [2022-12-13 12:02:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-12-13 12:02:57,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:02:57,280 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 25, 25, 25, 25, 25, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:02:57,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-12-13 12:02:57,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:02:57,481 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:02:57,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:02:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash -733208470, now seen corresponding path program 73 times [2022-12-13 12:02:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:02:57,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479807248] [2022-12-13 12:02:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:02:57,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:02:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:59,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:02:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:02:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:02:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:03:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:03:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:03:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:03:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:03:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:03:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:03:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:03:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:03:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:03:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:03:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:03:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:03:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:03:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:03:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:03:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:03:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:03:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:03:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:03:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:03:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:03:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:03:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:03:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:03:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 78 proven. 2449 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-12-13 12:03:00,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:00,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479807248] [2022-12-13 12:03:00,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479807248] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:00,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526225741] [2022-12-13 12:03:00,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:03:00,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:00,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:00,056 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:00,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-12-13 12:03:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:00,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 127 conjunts are in the unsatisfiable core [2022-12-13 12:03:00,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:01,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:03:03,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:03:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 123 proven. 2470 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2022-12-13 12:03:03,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:03:03,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:03:03,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:03:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3781 backedges. 78 proven. 2449 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-12-13 12:03:04,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526225741] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:03:04,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:03:04,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 58] total 118 [2022-12-13 12:03:04,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141238184] [2022-12-13 12:03:04,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:03:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-12-13 12:03:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:04,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-12-13 12:03:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=13324, Unknown=0, NotChecked=0, Total=13806 [2022-12-13 12:03:04,526 INFO L87 Difference]: Start difference. First operand 412 states and 420 transitions. Second operand has 118 states, 116 states have (on average 3.2155172413793105) internal successors, (373), 113 states have internal predecessors, (373), 53 states have call successors, (54), 1 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 53 states have call successors, (54) [2022-12-13 12:03:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:11,203 INFO L93 Difference]: Finished difference Result 532 states and 539 transitions. [2022-12-13 12:03:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-12-13 12:03:11,204 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 116 states have (on average 3.2155172413793105) internal successors, (373), 113 states have internal predecessors, (373), 53 states have call successors, (54), 1 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 53 states have call successors, (54) Word has length 315 [2022-12-13 12:03:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:11,205 INFO L225 Difference]: With dead ends: 532 [2022-12-13 12:03:11,205 INFO L226 Difference]: Without dead ends: 530 [2022-12-13 12:03:11,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 623 SyntacticMatches, 3 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10827 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1502, Invalid=37900, Unknown=0, NotChecked=0, Total=39402 [2022-12-13 12:03:11,207 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 591 mSDsluCounter, 5737 mSDsCounter, 0 mSdLazyCounter, 13110 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 5829 SdHoareTripleChecker+Invalid, 13236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 13110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:11,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 5829 Invalid, 13236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 13110 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 12:03:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2022-12-13 12:03:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 417. [2022-12-13 12:03:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 360 states have (on average 1.0138888888888888) internal successors, (365), 361 states have internal predecessors, (365), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:03:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 425 transitions. [2022-12-13 12:03:11,571 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 425 transitions. Word has length 315 [2022-12-13 12:03:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:11,571 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 425 transitions. [2022-12-13 12:03:11,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 116 states have (on average 3.2155172413793105) internal successors, (373), 113 states have internal predecessors, (373), 53 states have call successors, (54), 1 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 53 states have call successors, (54) [2022-12-13 12:03:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 425 transitions. [2022-12-13 12:03:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-12-13 12:03:11,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:11,572 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:11,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-12-13 12:03:11,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-12-13 12:03:11,773 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:11,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1611392928, now seen corresponding path program 74 times [2022-12-13 12:03:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:11,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028762368] [2022-12-13 12:03:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:03:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:03:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:03:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:03:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:03:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:03:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:03:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:03:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:03:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:03:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:03:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:03:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:03:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:03:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:03:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:03:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:03:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:03:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:03:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:03:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:03:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:03:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:03:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:03:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:03:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:03:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:03:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 1153 proven. 1322 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-12-13 12:03:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:13,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028762368] [2022-12-13 12:03:13,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028762368] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:13,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049140081] [2022-12-13 12:03:13,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:03:13,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:13,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:13,070 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:13,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-12-13 12:03:13,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:03:13,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:03:13,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 12:03:13,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 1250 proven. 1225 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-12-13 12:03:14,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:03:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3879 backedges. 1250 proven. 1225 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-12-13 12:03:15,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049140081] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:03:15,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:03:15,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2022-12-13 12:03:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359121086] [2022-12-13 12:03:15,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:03:15,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-12-13 12:03:15,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-12-13 12:03:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1571, Invalid=5235, Unknown=0, NotChecked=0, Total=6806 [2022-12-13 12:03:15,019 INFO L87 Difference]: Start difference. First operand 417 states and 425 transitions. Second operand has 83 states, 83 states have (on average 3.5903614457831323) internal successors, (298), 83 states have internal predecessors, (298), 27 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-12-13 12:03:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:16,135 INFO L93 Difference]: Finished difference Result 536 states and 543 transitions. [2022-12-13 12:03:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-13 12:03:16,136 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.5903614457831323) internal successors, (298), 83 states have internal predecessors, (298), 27 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) Word has length 319 [2022-12-13 12:03:16,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:16,137 INFO L225 Difference]: With dead ends: 536 [2022-12-13 12:03:16,137 INFO L226 Difference]: Without dead ends: 428 [2022-12-13 12:03:16,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 612 SyntacticMatches, 52 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5510 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2702, Invalid=9070, Unknown=0, NotChecked=0, Total=11772 [2022-12-13 12:03:16,138 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 431 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:16,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 585 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:03:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-12-13 12:03:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 412. [2022-12-13 12:03:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 355 states have (on average 1.0112676056338028) internal successors, (359), 356 states have internal predecessors, (359), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:03:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 419 transitions. [2022-12-13 12:03:16,490 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 419 transitions. Word has length 319 [2022-12-13 12:03:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:16,490 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 419 transitions. [2022-12-13 12:03:16,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.5903614457831323) internal successors, (298), 83 states have internal predecessors, (298), 27 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-12-13 12:03:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 419 transitions. [2022-12-13 12:03:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-12-13 12:03:16,492 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:16,492 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 27, 23, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:16,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-12-13 12:03:16,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-12-13 12:03:16,693 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 605189124, now seen corresponding path program 75 times [2022-12-13 12:03:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:16,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968497357] [2022-12-13 12:03:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:03:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:03:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:03:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:03:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:03:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:03:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:03:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:03:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:03:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:03:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:03:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:03:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:03:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:03:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:03:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:03:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:03:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:03:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:03:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:03:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:03:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:03:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:03:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:03:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:03:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:03:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:03:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:03:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:03:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4023 backedges. 84 proven. 2477 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-12-13 12:03:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968497357] [2022-12-13 12:03:19,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968497357] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496080574] [2022-12-13 12:03:19,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:03:19,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:19,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:19,346 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:19,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-12-13 12:03:26,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-12-13 12:03:26,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:03:26,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 129 conjunts are in the unsatisfiable core [2022-12-13 12:03:26,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:28,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:03:28,346 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 12:03:28,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:03:28,443 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 12:03:28,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:03:28,654 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 12:03:28,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:03:28,845 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 12:03:28,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:03:29,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:03:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4023 backedges. 481 proven. 2465 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2022-12-13 12:03:29,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:03:30,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:03:30,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:03:30,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4023 backedges. 72 proven. 2474 refuted. 0 times theorem prover too weak. 1477 trivial. 0 not checked. [2022-12-13 12:03:30,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496080574] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:03:30,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:03:30,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 61, 57] total 113 [2022-12-13 12:03:30,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018275614] [2022-12-13 12:03:30,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:03:30,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-12-13 12:03:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:30,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-12-13 12:03:30,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=12207, Unknown=0, NotChecked=0, Total=12656 [2022-12-13 12:03:30,798 INFO L87 Difference]: Start difference. First operand 412 states and 419 transitions. Second operand has 113 states, 113 states have (on average 3.185840707964602) internal successors, (360), 109 states have internal predecessors, (360), 52 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 54 states have call predecessors, (57), 52 states have call successors, (57) [2022-12-13 12:03:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:36,998 INFO L93 Difference]: Finished difference Result 428 states and 434 transitions. [2022-12-13 12:03:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-12-13 12:03:36,999 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.185840707964602) internal successors, (360), 109 states have internal predecessors, (360), 52 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 54 states have call predecessors, (57), 52 states have call successors, (57) Word has length 323 [2022-12-13 12:03:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:37,000 INFO L225 Difference]: With dead ends: 428 [2022-12-13 12:03:37,000 INFO L226 Difference]: Without dead ends: 426 [2022-12-13 12:03:37,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 632 SyntacticMatches, 21 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9191 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1224, Invalid=28532, Unknown=0, NotChecked=0, Total=29756 [2022-12-13 12:03:37,001 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 272 mSDsluCounter, 6272 mSDsCounter, 0 mSdLazyCounter, 13301 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 13379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 13301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:37,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 6367 Invalid, 13379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 13301 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 12:03:37,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-12-13 12:03:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 321. [2022-12-13 12:03:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 264 states have (on average 1.0113636363636365) internal successors, (267), 265 states have internal predecessors, (267), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:03:37,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 327 transitions. [2022-12-13 12:03:37,221 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 327 transitions. Word has length 323 [2022-12-13 12:03:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:37,221 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 327 transitions. [2022-12-13 12:03:37,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.185840707964602) internal successors, (360), 109 states have internal predecessors, (360), 52 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 54 states have call predecessors, (57), 52 states have call successors, (57) [2022-12-13 12:03:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 327 transitions. [2022-12-13 12:03:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-12-13 12:03:37,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:37,223 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 25, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:37,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-12-13 12:03:37,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-12-13 12:03:37,424 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash -501585619, now seen corresponding path program 76 times [2022-12-13 12:03:37,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:37,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6712444] [2022-12-13 12:03:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:37,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:03:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:03:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:03:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:03:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:03:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:03:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:03:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:03:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:03:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:03:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:03:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:03:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:03:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:03:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:03:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:03:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:03:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:03:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:03:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:03:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:03:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:03:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:03:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:03:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:03:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:03:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:03:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:03:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 78 proven. 2556 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-12-13 12:03:40,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:40,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6712444] [2022-12-13 12:03:40,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6712444] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:40,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214390017] [2022-12-13 12:03:40,173 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:03:40,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:40,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:40,174 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:40,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-12-13 12:03:40,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:03:40,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:03:40,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 130 conjunts are in the unsatisfiable core [2022-12-13 12:03:40,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:42,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:03:43,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:03:43,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:03:44,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:03:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 180 proven. 2556 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-12-13 12:03:44,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:03:45,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:03:45,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:03:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3990 backedges. 78 proven. 2556 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-12-13 12:03:45,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214390017] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:03:45,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:03:45,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 62, 61] total 124 [2022-12-13 12:03:45,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036137333] [2022-12-13 12:03:45,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:03:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2022-12-13 12:03:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2022-12-13 12:03:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=14687, Unknown=0, NotChecked=0, Total=15252 [2022-12-13 12:03:45,679 INFO L87 Difference]: Start difference. First operand 321 states and 327 transitions. Second operand has 124 states, 122 states have (on average 3.1475409836065573) internal successors, (384), 119 states have internal predecessors, (384), 55 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (56), 56 states have call predecessors, (56), 55 states have call successors, (56) [2022-12-13 12:03:52,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:03:52,401 INFO L93 Difference]: Finished difference Result 334 states and 339 transitions. [2022-12-13 12:03:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-12-13 12:03:52,402 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 122 states have (on average 3.1475409836065573) internal successors, (384), 119 states have internal predecessors, (384), 55 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (56), 56 states have call predecessors, (56), 55 states have call successors, (56) Word has length 323 [2022-12-13 12:03:52,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:03:52,403 INFO L225 Difference]: With dead ends: 334 [2022-12-13 12:03:52,403 INFO L226 Difference]: Without dead ends: 332 [2022-12-13 12:03:52,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 633 SyntacticMatches, 6 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9156 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1399, Invalid=32273, Unknown=0, NotChecked=0, Total=33672 [2022-12-13 12:03:52,404 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 238 mSDsluCounter, 6008 mSDsCounter, 0 mSdLazyCounter, 13246 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 6097 SdHoareTripleChecker+Invalid, 13324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 13246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:03:52,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 6097 Invalid, 13324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 13246 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 12:03:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-12-13 12:03:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 320. [2022-12-13 12:03:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 265 states have (on average 1.0075471698113208) internal successors, (267), 265 states have internal predecessors, (267), 28 states have call successors, (28), 26 states have call predecessors, (28), 26 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 12:03:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 323 transitions. [2022-12-13 12:03:52,619 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 323 transitions. Word has length 323 [2022-12-13 12:03:52,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:03:52,620 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 323 transitions. [2022-12-13 12:03:52,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 122 states have (on average 3.1475409836065573) internal successors, (384), 119 states have internal predecessors, (384), 55 states have call successors, (56), 2 states have call predecessors, (56), 3 states have return successors, (56), 56 states have call predecessors, (56), 55 states have call successors, (56) [2022-12-13 12:03:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 323 transitions. [2022-12-13 12:03:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-12-13 12:03:52,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:03:52,621 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 26, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:52,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-12-13 12:03:52,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:52,822 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:03:52,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 404375459, now seen corresponding path program 77 times [2022-12-13 12:03:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:52,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793871397] [2022-12-13 12:03:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:03:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:03:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:03:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:03:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:03:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:03:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:03:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:03:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:03:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:03:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:03:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:03:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:03:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:03:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:03:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:03:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:03:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:03:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:03:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:03:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:03:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:03:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:03:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:03:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:03:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:03:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:03:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:03:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:55,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4088 backedges. 81 proven. 2651 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-12-13 12:03:55,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793871397] [2022-12-13 12:03:55,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793871397] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:55,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715384695] [2022-12-13 12:03:55,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:03:55,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:55,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:55,667 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:55,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-12-13 12:03:56,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2022-12-13 12:03:56,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:03:56,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-13 12:03:56,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:58,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:04:01,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:04:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4088 backedges. 135 proven. 2666 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-12-13 12:04:01,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:04:01,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:04:01,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:04:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4088 backedges. 81 proven. 2651 refuted. 0 times theorem prover too weak. 1356 trivial. 0 not checked. [2022-12-13 12:04:01,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715384695] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:04:01,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:04:01,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 60] total 120 [2022-12-13 12:04:01,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383288969] [2022-12-13 12:04:01,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:04:01,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2022-12-13 12:04:01,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:01,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2022-12-13 12:04:01,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=13790, Unknown=0, NotChecked=0, Total=14280 [2022-12-13 12:04:01,797 INFO L87 Difference]: Start difference. First operand 320 states and 323 transitions. Second operand has 120 states, 119 states have (on average 3.2436974789915967) internal successors, (386), 116 states have internal predecessors, (386), 54 states have call successors, (55), 1 states have call predecessors, (55), 2 states have return successors, (55), 55 states have call predecessors, (55), 54 states have call successors, (55) [2022-12-13 12:04:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:08,511 INFO L93 Difference]: Finished difference Result 448 states and 454 transitions. [2022-12-13 12:04:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-12-13 12:04:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 3.2436974789915967) internal successors, (386), 116 states have internal predecessors, (386), 54 states have call successors, (55), 1 states have call predecessors, (55), 2 states have return successors, (55), 55 states have call predecessors, (55), 54 states have call successors, (55) Word has length 327 [2022-12-13 12:04:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:08,513 INFO L225 Difference]: With dead ends: 448 [2022-12-13 12:04:08,513 INFO L226 Difference]: Without dead ends: 446 [2022-12-13 12:04:08,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11478 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1543, Invalid=39869, Unknown=0, NotChecked=0, Total=41412 [2022-12-13 12:04:08,515 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 509 mSDsluCounter, 6618 mSDsCounter, 0 mSdLazyCounter, 13405 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 6711 SdHoareTripleChecker+Invalid, 13542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 13405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:08,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 6711 Invalid, 13542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 13405 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 12:04:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-13 12:04:08,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 329. [2022-12-13 12:04:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 273 states have (on average 1.010989010989011) internal successors, (276), 273 states have internal predecessors, (276), 29 states have call successors, (29), 26 states have call predecessors, (29), 26 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-13 12:04:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 334 transitions. [2022-12-13 12:04:08,755 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 334 transitions. Word has length 327 [2022-12-13 12:04:08,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:08,756 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 334 transitions. [2022-12-13 12:04:08,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 3.2436974789915967) internal successors, (386), 116 states have internal predecessors, (386), 54 states have call successors, (55), 1 states have call predecessors, (55), 2 states have return successors, (55), 55 states have call predecessors, (55), 54 states have call successors, (55) [2022-12-13 12:04:08,756 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 334 transitions. [2022-12-13 12:04:08,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-12-13 12:04:08,757 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:08,757 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:08,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-12-13 12:04:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:08,958 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:08,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1970928409, now seen corresponding path program 78 times [2022-12-13 12:04:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:08,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902845903] [2022-12-13 12:04:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:08,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:04:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:04:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:04:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:04:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:04:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:04:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:04:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:04:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:04:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:04:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:04:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:04:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:04:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:04:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:04:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:04:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:04:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:04:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:04:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:04:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:04:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:04:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:04:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:04:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:04:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:04:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:04:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:04:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4190 backedges. 1251 proven. 1427 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-12-13 12:04:10,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902845903] [2022-12-13 12:04:10,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902845903] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:04:10,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382741205] [2022-12-13 12:04:10,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:04:10,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:10,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:04:10,375 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:04:10,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-12-13 12:04:12,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2022-12-13 12:04:12,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:04:12,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 12:04:12,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:04:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4190 backedges. 1352 proven. 1326 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-12-13 12:04:13,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:04:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4190 backedges. 1352 proven. 1326 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-12-13 12:04:14,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382741205] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:04:14,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:04:14,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2022-12-13 12:04:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830274358] [2022-12-13 12:04:14,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:04:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-12-13 12:04:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-12-13 12:04:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1685, Invalid=5625, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 12:04:14,144 INFO L87 Difference]: Start difference. First operand 329 states and 334 transitions. Second operand has 86 states, 86 states have (on average 3.5930232558139537) internal successors, (309), 86 states have internal predecessors, (309), 28 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 12:04:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:15,325 INFO L93 Difference]: Finished difference Result 453 states and 459 transitions. [2022-12-13 12:04:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-12-13 12:04:15,325 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.5930232558139537) internal successors, (309), 86 states have internal predecessors, (309), 28 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) Word has length 331 [2022-12-13 12:04:15,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:15,327 INFO L225 Difference]: With dead ends: 453 [2022-12-13 12:04:15,327 INFO L226 Difference]: Without dead ends: 341 [2022-12-13 12:04:15,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 635 SyntacticMatches, 54 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5925 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2900, Invalid=9756, Unknown=0, NotChecked=0, Total=12656 [2022-12-13 12:04:15,328 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 531 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:15,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 655 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 12:04:15,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-12-13 12:04:15,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 324. [2022-12-13 12:04:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 268 states have (on average 1.007462686567164) internal successors, (270), 268 states have internal predecessors, (270), 29 states have call successors, (29), 26 states have call predecessors, (29), 26 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-13 12:04:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 328 transitions. [2022-12-13 12:04:15,558 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 328 transitions. Word has length 331 [2022-12-13 12:04:15,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:15,558 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 328 transitions. [2022-12-13 12:04:15,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.5930232558139537) internal successors, (309), 86 states have internal predecessors, (309), 28 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2022-12-13 12:04:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 328 transitions. [2022-12-13 12:04:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-12-13 12:04:15,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:15,559 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 27, 26, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:15,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-12-13 12:04:15,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-12-13 12:04:15,760 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1753908198, now seen corresponding path program 79 times [2022-12-13 12:04:15,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:15,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842151963] [2022-12-13 12:04:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:15,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:04:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:04:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:04:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:04:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:04:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:04:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:04:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:04:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:04:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:04:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:04:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:04:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:04:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:04:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:04:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:04:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:04:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:04:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:04:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:04:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:04:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:04:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:04:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:04:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:04:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:04:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:04:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:04:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:04:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 81 proven. 2762 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-12-13 12:04:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:18,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842151963] [2022-12-13 12:04:18,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842151963] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:04:18,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651344243] [2022-12-13 12:04:18,392 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:04:18,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:18,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:04:18,392 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:04:18,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-12-13 12:04:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:18,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 134 conjunts are in the unsatisfiable core [2022-12-13 12:04:18,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:04:21,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:04:21,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:21,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:04:23,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:04:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 241 proven. 2777 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-12-13 12:04:23,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:04:23,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:04:23,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:04:24,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 81 proven. 2762 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-12-13 12:04:24,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651344243] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:04:24,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:04:24,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 62] total 126 [2022-12-13 12:04:24,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694744578] [2022-12-13 12:04:24,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:04:24,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-12-13 12:04:24,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:24,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-12-13 12:04:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=15180, Unknown=0, NotChecked=0, Total=15750 [2022-12-13 12:04:24,286 INFO L87 Difference]: Start difference. First operand 324 states and 328 transitions. Second operand has 126 states, 124 states have (on average 3.193548387096774) internal successors, (396), 121 states have internal predecessors, (396), 57 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (58), 58 states have call predecessors, (58), 57 states have call successors, (58) [2022-12-13 12:04:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:04:30,970 INFO L93 Difference]: Finished difference Result 337 states and 340 transitions. [2022-12-13 12:04:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-12-13 12:04:30,971 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 124 states have (on average 3.193548387096774) internal successors, (396), 121 states have internal predecessors, (396), 57 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (58), 58 states have call predecessors, (58), 57 states have call successors, (58) Word has length 335 [2022-12-13 12:04:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:04:30,972 INFO L225 Difference]: With dead ends: 337 [2022-12-13 12:04:30,972 INFO L226 Difference]: Without dead ends: 335 [2022-12-13 12:04:30,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 659 SyntacticMatches, 6 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9192 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1381, Invalid=32659, Unknown=0, NotChecked=0, Total=34040 [2022-12-13 12:04:30,973 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 281 mSDsluCounter, 6778 mSDsCounter, 0 mSdLazyCounter, 14896 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 6871 SdHoareTripleChecker+Invalid, 14974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 14896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:04:30,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 6871 Invalid, 14974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 14896 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-13 12:04:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-12-13 12:04:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 332. [2022-12-13 12:04:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 275 states have internal predecessors, (277), 29 states have call successors, (29), 27 states have call predecessors, (29), 27 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-13 12:04:31,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 335 transitions. [2022-12-13 12:04:31,207 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 335 transitions. Word has length 335 [2022-12-13 12:04:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:04:31,208 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 335 transitions. [2022-12-13 12:04:31,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 124 states have (on average 3.193548387096774) internal successors, (396), 121 states have internal predecessors, (396), 57 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (58), 58 states have call predecessors, (58), 57 states have call successors, (58) [2022-12-13 12:04:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 335 transitions. [2022-12-13 12:04:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2022-12-13 12:04:31,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:04:31,209 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 27, 27, 27, 27, 27, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:31,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-12-13 12:04:31,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:31,410 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:04:31,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1595694556, now seen corresponding path program 80 times [2022-12-13 12:04:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:31,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760027595] [2022-12-13 12:04:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:31,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:04:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:04:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:04:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:04:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:04:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:04:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:04:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:04:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:04:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:04:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:04:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:04:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:04:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:04:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:04:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:04:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:04:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:04:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:04:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:04:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:04:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:04:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:04:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:04:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:04:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:04:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:04:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:04:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:04:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4407 backedges. 84 proven. 2861 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-12-13 12:04:34,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:34,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760027595] [2022-12-13 12:04:34,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760027595] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:04:34,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755561919] [2022-12-13 12:04:34,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:04:34,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:34,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:04:34,183 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:04:34,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-12-13 12:04:34,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:04:34,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:04:34,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-13 12:04:34,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:04:36,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:04:39,434 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-13 12:04:39,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-12-13 12:04:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4407 backedges. 1404 proven. 1613 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2022-12-13 12:04:39,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:04:45,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-12-13 12:04:45,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-12-13 12:04:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4407 backedges. 1384 proven. 1561 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-12-13 12:04:50,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755561919] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:04:50,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:04:50,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 65, 64] total 184 [2022-12-13 12:04:50,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49415243] [2022-12-13 12:04:50,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:04:50,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 184 states [2022-12-13 12:04:50,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:04:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2022-12-13 12:04:50,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3480, Invalid=30191, Unknown=1, NotChecked=0, Total=33672 [2022-12-13 12:04:50,170 INFO L87 Difference]: Start difference. First operand 332 states and 335 transitions. Second operand has 184 states, 184 states have (on average 3.1630434782608696) internal successors, (582), 178 states have internal predecessors, (582), 83 states have call successors, (84), 1 states have call predecessors, (84), 2 states have return successors, (86), 86 states have call predecessors, (86), 83 states have call successors, (86) [2022-12-13 12:05:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:05:16,039 INFO L93 Difference]: Finished difference Result 458 states and 464 transitions. [2022-12-13 12:05:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2022-12-13 12:05:16,040 INFO L78 Accepts]: Start accepts. Automaton has has 184 states, 184 states have (on average 3.1630434782608696) internal successors, (582), 178 states have internal predecessors, (582), 83 states have call successors, (84), 1 states have call predecessors, (84), 2 states have return successors, (86), 86 states have call predecessors, (86), 83 states have call successors, (86) Word has length 339 [2022-12-13 12:05:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:05:16,041 INFO L225 Difference]: With dead ends: 458 [2022-12-13 12:05:16,041 INFO L226 Difference]: Without dead ends: 346 [2022-12-13 12:05:16,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 378 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38904 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=13570, Invalid=130449, Unknown=1, NotChecked=0, Total=144020 [2022-12-13 12:05:16,047 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 1310 mSDsluCounter, 4117 mSDsCounter, 0 mSdLazyCounter, 12170 mSolverCounterSat, 557 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 12728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 12170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:05:16,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 4208 Invalid, 12728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 12170 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-12-13 12:05:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-12-13 12:05:16,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 336. [2022-12-13 12:05:16,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 278 states have (on average 1.0071942446043165) internal successors, (280), 278 states have internal predecessors, (280), 30 states have call successors, (30), 27 states have call predecessors, (30), 27 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:05:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 340 transitions. [2022-12-13 12:05:16,291 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 340 transitions. Word has length 339 [2022-12-13 12:05:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:05:16,292 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 340 transitions. [2022-12-13 12:05:16,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 184 states, 184 states have (on average 3.1630434782608696) internal successors, (582), 178 states have internal predecessors, (582), 83 states have call successors, (84), 1 states have call predecessors, (84), 2 states have return successors, (86), 86 states have call predecessors, (86), 83 states have call successors, (86) [2022-12-13 12:05:16,292 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 340 transitions. [2022-12-13 12:05:16,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-12-13 12:05:16,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:05:16,293 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 28, 27, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:05:16,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-12-13 12:05:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:05:16,494 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:05:16,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:05:16,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1453503073, now seen corresponding path program 81 times [2022-12-13 12:05:16,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:05:16,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399885517] [2022-12-13 12:05:16,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:05:16,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:05:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:05:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:05:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:05:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:05:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:05:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:05:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:05:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:05:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:05:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:05:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:05:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:05:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:05:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:05:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:05:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:05:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:05:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:05:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:05:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:05:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:05:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:05:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:05:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:05:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:05:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:05:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:05:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:05:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:05:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:05:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 84 proven. 2976 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-12-13 12:05:19,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:05:19,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399885517] [2022-12-13 12:05:19,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399885517] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:05:19,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969827627] [2022-12-13 12:05:19,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:05:19,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:05:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:05:19,638 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:05:19,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-12-13 12:05:28,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2022-12-13 12:05:28,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:05:28,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-13 12:05:28,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:05:30,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:05:32,441 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 12:05:32,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 12:05:34,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:05:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 194 proven. 2976 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2022-12-13 12:05:34,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:05:34,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:05:34,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:05:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4632 backedges. 84 proven. 2976 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-12-13 12:05:35,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969827627] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:05:35,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:05:35,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 126 [2022-12-13 12:05:35,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214145683] [2022-12-13 12:05:35,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:05:35,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2022-12-13 12:05:35,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:05:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2022-12-13 12:05:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=15261, Unknown=1, NotChecked=0, Total=15750 [2022-12-13 12:05:35,255 INFO L87 Difference]: Start difference. First operand 336 states and 340 transitions. Second operand has 126 states, 125 states have (on average 3.224) internal successors, (403), 121 states have internal predecessors, (403), 58 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (60), 60 states have call predecessors, (60), 58 states have call successors, (60) [2022-12-13 12:05:42,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:05:42,895 INFO L93 Difference]: Finished difference Result 349 states and 352 transitions. [2022-12-13 12:05:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-13 12:05:42,896 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 3.224) internal successors, (403), 121 states have internal predecessors, (403), 58 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (60), 60 states have call predecessors, (60), 58 states have call successors, (60) Word has length 347 [2022-12-13 12:05:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:05:42,897 INFO L225 Difference]: With dead ends: 349 [2022-12-13 12:05:42,897 INFO L226 Difference]: Without dead ends: 347 [2022-12-13 12:05:42,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 685 SyntacticMatches, 8 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9661 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=1279, Invalid=34252, Unknown=1, NotChecked=0, Total=35532 [2022-12-13 12:05:42,899 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 291 mSDsluCounter, 6913 mSDsCounter, 0 mSdLazyCounter, 14585 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 7007 SdHoareTripleChecker+Invalid, 14671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 14585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 12:05:42,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 7007 Invalid, 14671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 14585 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 12:05:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-12-13 12:05:43,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 344. [2022-12-13 12:05:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 285 states have internal predecessors, (287), 30 states have call successors, (30), 28 states have call predecessors, (30), 28 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-12-13 12:05:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 347 transitions. [2022-12-13 12:05:43,143 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 347 transitions. Word has length 347 [2022-12-13 12:05:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:05:43,144 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 347 transitions. [2022-12-13 12:05:43,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 3.224) internal successors, (403), 121 states have internal predecessors, (403), 58 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (60), 60 states have call predecessors, (60), 58 states have call successors, (60) [2022-12-13 12:05:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 347 transitions. [2022-12-13 12:05:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-12-13 12:05:43,145 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:05:43,145 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 28, 28, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:05:43,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2022-12-13 12:05:43,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:05:43,346 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:05:43,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:05:43,347 INFO L85 PathProgramCache]: Analyzing trace with hash 26321685, now seen corresponding path program 82 times [2022-12-13 12:05:43,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:05:43,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544676014] [2022-12-13 12:05:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:05:43,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:05:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:05:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:05:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:05:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:05:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:05:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:05:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:05:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:05:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:05:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:05:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:05:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:05:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:05:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:05:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:05:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:05:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:05:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:05:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:05:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:05:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:05:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:05:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:05:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:05:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:05:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:05:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:05:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:05:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:05:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:05:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:05:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4738 backedges. 87 proven. 3079 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-12-13 12:05:46,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:05:46,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544676014] [2022-12-13 12:05:46,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544676014] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:05:46,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506065172] [2022-12-13 12:05:46,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:05:46,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:05:46,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:05:46,400 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:05:46,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-12-13 12:05:47,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:05:47,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:05:47,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 139 conjunts are in the unsatisfiable core [2022-12-13 12:05:47,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:05:49,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:05:51,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:05:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4738 backedges. 87 proven. 3079 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-12-13 12:05:51,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:05:52,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:05:52,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:05:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4738 backedges. 87 proven. 3079 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-12-13 12:05:52,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506065172] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:05:52,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:05:52,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 65] total 132 [2022-12-13 12:05:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546823221] [2022-12-13 12:05:52,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:05:52,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-12-13 12:05:52,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:05:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-12-13 12:05:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=16745, Unknown=0, NotChecked=0, Total=17292 [2022-12-13 12:05:52,766 INFO L87 Difference]: Start difference. First operand 344 states and 347 transitions. Second operand has 132 states, 130 states have (on average 3.1923076923076925) internal successors, (415), 127 states have internal predecessors, (415), 59 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 60 states have call predecessors, (60), 59 states have call successors, (60) [2022-12-13 12:06:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:06:01,511 INFO L93 Difference]: Finished difference Result 480 states and 486 transitions. [2022-12-13 12:06:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-12-13 12:06:01,512 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 130 states have (on average 3.1923076923076925) internal successors, (415), 127 states have internal predecessors, (415), 59 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 60 states have call predecessors, (60), 59 states have call successors, (60) Word has length 351 [2022-12-13 12:06:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:06:01,514 INFO L225 Difference]: With dead ends: 480 [2022-12-13 12:06:01,514 INFO L226 Difference]: Without dead ends: 478 [2022-12-13 12:06:01,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 693 SyntacticMatches, 3 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14361 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1755, Invalid=49547, Unknown=0, NotChecked=0, Total=51302 [2022-12-13 12:06:01,516 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 540 mSDsluCounter, 7988 mSDsCounter, 0 mSdLazyCounter, 17797 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 8086 SdHoareTripleChecker+Invalid, 17938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 17797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 12:06:01,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 8086 Invalid, 17938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 17797 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 12:06:01,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2022-12-13 12:06:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 353. [2022-12-13 12:06:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 293 states have (on average 1.0102389078498293) internal successors, (296), 293 states have internal predecessors, (296), 31 states have call successors, (31), 28 states have call predecessors, (31), 28 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 12:06:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 358 transitions. [2022-12-13 12:06:01,785 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 358 transitions. Word has length 351 [2022-12-13 12:06:01,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:06:01,786 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 358 transitions. [2022-12-13 12:06:01,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 130 states have (on average 3.1923076923076925) internal successors, (415), 127 states have internal predecessors, (415), 59 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 60 states have call predecessors, (60), 59 states have call successors, (60) [2022-12-13 12:06:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 358 transitions. [2022-12-13 12:06:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-12-13 12:06:01,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:06:01,787 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:06:01,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-12-13 12:06:01,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-12-13 12:06:01,988 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:06:01,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:06:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash -736998005, now seen corresponding path program 83 times [2022-12-13 12:06:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:06:01,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359729887] [2022-12-13 12:06:01,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:06:01,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:06:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:06:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:06:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:06:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:06:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:06:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:06:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:06:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:06:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:06:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:06:03,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:06:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:06:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:06:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:06:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:06:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:06:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:06:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:06:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:06:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:06:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:06:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:06:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:06:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:06:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:06:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:06:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:06:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:06:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:06:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:06:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 1459 proven. 1649 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-12-13 12:06:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:06:03,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359729887] [2022-12-13 12:06:03,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359729887] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:06:03,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487515062] [2022-12-13 12:06:03,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:06:03,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:06:03,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:06:03,653 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:06:03,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-12-13 12:06:04,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2022-12-13 12:06:04,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:06:04,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 12:06:04,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:06:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 1568 proven. 1540 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-12-13 12:06:05,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:06:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 1568 proven. 1540 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-12-13 12:06:06,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487515062] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:06:06,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:06:06,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 92 [2022-12-13 12:06:06,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822160579] [2022-12-13 12:06:06,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:06:06,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-12-13 12:06:06,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:06:06,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-12-13 12:06:06,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1925, Invalid=6447, Unknown=0, NotChecked=0, Total=8372 [2022-12-13 12:06:06,864 INFO L87 Difference]: Start difference. First operand 353 states and 358 transitions. Second operand has 92 states, 92 states have (on average 3.597826086956522) internal successors, (331), 92 states have internal predecessors, (331), 30 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-12-13 12:06:08,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:06:08,088 INFO L93 Difference]: Finished difference Result 485 states and 491 transitions. [2022-12-13 12:06:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 12:06:08,088 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.597826086956522) internal successors, (331), 92 states have internal predecessors, (331), 30 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) Word has length 355 [2022-12-13 12:06:08,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:06:08,090 INFO L225 Difference]: With dead ends: 485 [2022-12-13 12:06:08,090 INFO L226 Difference]: Without dead ends: 365 [2022-12-13 12:06:08,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 681 SyntacticMatches, 58 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6800 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3317, Invalid=11203, Unknown=0, NotChecked=0, Total=14520 [2022-12-13 12:06:08,091 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 502 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:06:08,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 653 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:06:08,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-12-13 12:06:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 348. [2022-12-13 12:06:08,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 288 states have (on average 1.0069444444444444) internal successors, (290), 288 states have internal predecessors, (290), 31 states have call successors, (31), 28 states have call predecessors, (31), 28 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 12:06:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 352 transitions. [2022-12-13 12:06:08,377 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 352 transitions. Word has length 355 [2022-12-13 12:06:08,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:06:08,378 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 352 transitions. [2022-12-13 12:06:08,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.597826086956522) internal successors, (331), 92 states have internal predecessors, (331), 30 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 30 states have call predecessors, (31), 30 states have call successors, (31) [2022-12-13 12:06:08,378 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 352 transitions. [2022-12-13 12:06:08,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-12-13 12:06:08,379 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:06:08,379 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 29, 29, 29, 29, 29, 28, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:06:08,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-12-13 12:06:08,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-12-13 12:06:08,580 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:06:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:06:08,581 INFO L85 PathProgramCache]: Analyzing trace with hash -323877288, now seen corresponding path program 84 times [2022-12-13 12:06:08,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:06:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15693612] [2022-12-13 12:06:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:06:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:06:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:06:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:06:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:06:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:06:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:06:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:06:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:06:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:06:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:06:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:06:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:06:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:06:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:06:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:06:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:06:11,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:06:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:06:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:06:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:06:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:06:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:06:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:06:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:06:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:06:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:06:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:06:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:06:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:06:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:06:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:06:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:06:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 87 proven. 3198 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-12-13 12:06:11,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:06:11,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15693612] [2022-12-13 12:06:11,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15693612] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:06:11,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402116409] [2022-12-13 12:06:11,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:06:11,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:06:11,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:06:11,989 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:06:11,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-12-13 12:06:16,231 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2022-12-13 12:06:16,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:06:16,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 135 conjunts are in the unsatisfiable core [2022-12-13 12:06:16,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:06:18,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:06:21,002 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 12:06:21,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 12:06:22,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:06:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 201 proven. 3198 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-12-13 12:06:22,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:06:23,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:06:23,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:06:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 87 proven. 3198 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-12-13 12:06:23,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402116409] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:06:23,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:06:23,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 130 [2022-12-13 12:06:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449401821] [2022-12-13 12:06:23,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:06:23,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-12-13 12:06:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:06:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-12-13 12:06:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=16265, Unknown=1, NotChecked=0, Total=16770 [2022-12-13 12:06:23,629 INFO L87 Difference]: Start difference. First operand 348 states and 352 transitions. Second operand has 130 states, 129 states have (on average 3.2325581395348837) internal successors, (417), 125 states have internal predecessors, (417), 60 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (62), 62 states have call predecessors, (62), 60 states have call successors, (62) [2022-12-13 12:06:31,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:06:31,241 INFO L93 Difference]: Finished difference Result 361 states and 364 transitions. [2022-12-13 12:06:31,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-12-13 12:06:31,242 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 3.2325581395348837) internal successors, (417), 125 states have internal predecessors, (417), 60 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (62), 62 states have call predecessors, (62), 60 states have call successors, (62) Word has length 359 [2022-12-13 12:06:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:06:31,243 INFO L225 Difference]: With dead ends: 361 [2022-12-13 12:06:31,243 INFO L226 Difference]: Without dead ends: 359 [2022-12-13 12:06:31,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 709 SyntacticMatches, 8 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10293 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1321, Invalid=36508, Unknown=1, NotChecked=0, Total=37830 [2022-12-13 12:06:31,245 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 305 mSDsluCounter, 6980 mSDsCounter, 0 mSdLazyCounter, 15732 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 7077 SdHoareTripleChecker+Invalid, 15821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 15732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:06:31,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 7077 Invalid, 15821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 15732 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-12-13 12:06:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-12-13 12:06:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 356. [2022-12-13 12:06:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 295 states have (on average 1.006779661016949) internal successors, (297), 295 states have internal predecessors, (297), 31 states have call successors, (31), 29 states have call predecessors, (31), 29 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 12:06:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 359 transitions. [2022-12-13 12:06:31,510 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 359 transitions. Word has length 359 [2022-12-13 12:06:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:06:31,510 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 359 transitions. [2022-12-13 12:06:31,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 3.2325581395348837) internal successors, (417), 125 states have internal predecessors, (417), 60 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (62), 62 states have call predecessors, (62), 60 states have call successors, (62) [2022-12-13 12:06:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 359 transitions. [2022-12-13 12:06:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-12-13 12:06:31,512 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:06:31,512 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 29, 29, 29, 29, 29, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:06:31,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-12-13 12:06:31,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:06:31,713 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:06:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:06:31,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1510385842, now seen corresponding path program 85 times [2022-12-13 12:06:31,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:06:31,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556033567] [2022-12-13 12:06:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:06:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:06:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:06:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:06:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:06:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:06:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:06:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:06:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:06:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:06:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:06:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:06:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:06:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:06:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:06:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:06:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:06:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:06:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:06:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:06:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:06:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:06:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:06:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:06:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:06:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:06:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:06:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:06:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:06:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:06:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:06:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:06:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:06:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:34,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5081 backedges. 90 proven. 3305 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-12-13 12:06:34,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:06:34,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556033567] [2022-12-13 12:06:34,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556033567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:06:34,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853256840] [2022-12-13 12:06:34,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:06:34,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:06:34,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:06:34,905 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:06:34,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-12-13 12:06:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:35,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 143 conjunts are in the unsatisfiable core [2022-12-13 12:06:35,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:06:38,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:06:40,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:06:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5081 backedges. 141 proven. 3332 refuted. 0 times theorem prover too weak. 1608 trivial. 0 not checked. [2022-12-13 12:06:40,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:06:40,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:06:40,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:06:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5081 backedges. 90 proven. 3305 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-12-13 12:06:40,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853256840] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:06:40,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:06:40,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67, 66] total 134 [2022-12-13 12:06:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310849909] [2022-12-13 12:06:40,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:06:40,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-12-13 12:06:40,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:06:40,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-12-13 12:06:40,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=17272, Unknown=0, NotChecked=0, Total=17822 [2022-12-13 12:06:40,904 INFO L87 Difference]: Start difference. First operand 356 states and 359 transitions. Second operand has 134 states, 132 states have (on average 3.25) internal successors, (429), 129 states have internal predecessors, (429), 61 states have call successors, (62), 1 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 61 states have call successors, (62) [2022-12-13 12:06:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:06:51,138 INFO L93 Difference]: Finished difference Result 496 states and 502 transitions. [2022-12-13 12:06:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-12-13 12:06:51,139 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 132 states have (on average 3.25) internal successors, (429), 129 states have internal predecessors, (429), 61 states have call successors, (62), 1 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 61 states have call successors, (62) Word has length 363 [2022-12-13 12:06:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:06:51,141 INFO L225 Difference]: With dead ends: 496 [2022-12-13 12:06:51,141 INFO L226 Difference]: Without dead ends: 494 [2022-12-13 12:06:51,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 719 SyntacticMatches, 3 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14225 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1722, Invalid=49580, Unknown=0, NotChecked=0, Total=51302 [2022-12-13 12:06:51,144 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 849 mSDsluCounter, 6709 mSDsCounter, 0 mSdLazyCounter, 15458 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 15612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 15458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:06:51,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 6811 Invalid, 15612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 15458 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-12-13 12:06:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-12-13 12:06:51,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 365. [2022-12-13 12:06:51,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 303 states have (on average 1.00990099009901) internal successors, (306), 303 states have internal predecessors, (306), 32 states have call successors, (32), 29 states have call predecessors, (32), 29 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-13 12:06:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 370 transitions. [2022-12-13 12:06:51,431 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 370 transitions. Word has length 363 [2022-12-13 12:06:51,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:06:51,431 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 370 transitions. [2022-12-13 12:06:51,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 132 states have (on average 3.25) internal successors, (429), 129 states have internal predecessors, (429), 61 states have call successors, (62), 1 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 61 states have call successors, (62) [2022-12-13 12:06:51,432 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 370 transitions. [2022-12-13 12:06:51,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-12-13 12:06:51,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:06:51,433 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:06:51,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-12-13 12:06:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-12-13 12:06:51,634 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:06:51,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:06:51,635 INFO L85 PathProgramCache]: Analyzing trace with hash -660390588, now seen corresponding path program 86 times [2022-12-13 12:06:51,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:06:51,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980644336] [2022-12-13 12:06:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:06:51,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:06:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:06:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:06:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:06:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:06:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:06:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:06:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:06:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:06:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:06:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:06:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:06:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:06:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:06:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:06:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:06:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:06:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:06:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:06:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:06:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:06:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:06:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:06:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:06:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:06:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:06:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:06:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:06:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:06:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:06:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:06:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:06:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:06:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5195 backedges. 1569 proven. 1766 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-12-13 12:06:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:06:53,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980644336] [2022-12-13 12:06:53,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980644336] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:06:53,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935257478] [2022-12-13 12:06:53,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:06:53,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:06:53,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:06:53,379 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:06:53,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-12-13 12:06:53,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:06:53,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:06:53,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-13 12:06:53,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:06:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5195 backedges. 1682 proven. 1653 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-12-13 12:06:54,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:06:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5195 backedges. 1682 proven. 1653 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2022-12-13 12:06:55,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935257478] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:06:55,813 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:06:55,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 95 [2022-12-13 12:06:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147815622] [2022-12-13 12:06:55,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:06:55,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-12-13 12:06:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:06:55,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-12-13 12:06:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2051, Invalid=6879, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 12:06:55,815 INFO L87 Difference]: Start difference. First operand 365 states and 370 transitions. Second operand has 95 states, 95 states have (on average 3.6) internal successors, (342), 95 states have internal predecessors, (342), 31 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-12-13 12:06:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:06:57,073 INFO L93 Difference]: Finished difference Result 501 states and 507 transitions. [2022-12-13 12:06:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 12:06:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.6) internal successors, (342), 95 states have internal predecessors, (342), 31 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) Word has length 367 [2022-12-13 12:06:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:06:57,075 INFO L225 Difference]: With dead ends: 501 [2022-12-13 12:06:57,075 INFO L226 Difference]: Without dead ends: 377 [2022-12-13 12:06:57,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 704 SyntacticMatches, 60 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7260 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3536, Invalid=11964, Unknown=0, NotChecked=0, Total=15500 [2022-12-13 12:06:57,076 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 577 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 12:06:57,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 777 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 12:06:57,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-12-13 12:06:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 360. [2022-12-13 12:06:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 298 states have internal predecessors, (300), 32 states have call successors, (32), 29 states have call predecessors, (32), 29 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-13 12:06:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 364 transitions. [2022-12-13 12:06:57,345 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 364 transitions. Word has length 367 [2022-12-13 12:06:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:06:57,345 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 364 transitions. [2022-12-13 12:06:57,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.6) internal successors, (342), 95 states have internal predecessors, (342), 31 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-12-13 12:06:57,346 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 364 transitions. [2022-12-13 12:06:57,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-12-13 12:06:57,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:06:57,347 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 30, 29, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:06:57,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2022-12-13 12:06:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:06:57,548 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:06:57,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:06:57,549 INFO L85 PathProgramCache]: Analyzing trace with hash -119017967, now seen corresponding path program 87 times [2022-12-13 12:06:57,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:06:57,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643134955] [2022-12-13 12:06:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:06:57,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:06:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:07:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:07:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:07:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:07:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:07:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:07:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:07:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:07:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:07:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:07:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:07:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:07:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:07:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:07:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:07:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:07:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:07:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:07:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:07:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:07:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:07:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:07:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:07:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:07:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:07:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:07:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:07:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:07:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:07:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:07:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:07:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 12:07:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5322 backedges. 90 proven. 3428 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-12-13 12:07:01,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:07:01,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643134955] [2022-12-13 12:07:01,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643134955] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:07:01,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755123081] [2022-12-13 12:07:01,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:07:01,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:01,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:07:01,181 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:07:01,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-12-13 12:07:13,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-12-13 12:07:13,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:07:13,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 139 conjunts are in the unsatisfiable core [2022-12-13 12:07:13,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:07:15,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:07:16,221 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-12-13 12:07:16,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-12-13 12:07:17,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-12-13 12:07:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5322 backedges. 208 proven. 3428 refuted. 0 times theorem prover too weak. 1686 trivial. 0 not checked. [2022-12-13 12:07:18,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:07:18,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2022-12-13 12:07:18,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2022-12-13 12:07:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5322 backedges. 90 proven. 3428 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-12-13 12:07:19,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755123081] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:07:19,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:07:19,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68, 68] total 134 [2022-12-13 12:07:19,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938689453] [2022-12-13 12:07:19,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:07:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-12-13 12:07:19,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:07:19,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-12-13 12:07:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=17302, Unknown=0, NotChecked=0, Total=17822 [2022-12-13 12:07:19,032 INFO L87 Difference]: Start difference. First operand 360 states and 364 transitions. Second operand has 134 states, 133 states have (on average 3.2406015037593985) internal successors, (431), 129 states have internal predecessors, (431), 62 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (64), 64 states have call predecessors, (64), 62 states have call successors, (64) [2022-12-13 12:07:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:07:28,186 INFO L93 Difference]: Finished difference Result 373 states and 376 transitions. [2022-12-13 12:07:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-12-13 12:07:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 133 states have (on average 3.2406015037593985) internal successors, (431), 129 states have internal predecessors, (431), 62 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (64), 64 states have call predecessors, (64), 62 states have call successors, (64) Word has length 371 [2022-12-13 12:07:28,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:07:28,187 INFO L225 Difference]: With dead ends: 373 [2022-12-13 12:07:28,187 INFO L226 Difference]: Without dead ends: 371 [2022-12-13 12:07:28,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 733 SyntacticMatches, 8 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10945 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1363, Invalid=38837, Unknown=0, NotChecked=0, Total=40200 [2022-12-13 12:07:28,189 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 329 mSDsluCounter, 8131 mSDsCounter, 0 mSdLazyCounter, 17198 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 17287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 17198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 12:07:28,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 8231 Invalid, 17287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 17198 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 12:07:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-12-13 12:07:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 368. [2022-12-13 12:07:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 305 states have (on average 1.0065573770491802) internal successors, (307), 305 states have internal predecessors, (307), 32 states have call successors, (32), 30 states have call predecessors, (32), 30 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-12-13 12:07:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 371 transitions. [2022-12-13 12:07:28,474 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 371 transitions. Word has length 371 [2022-12-13 12:07:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:07:28,474 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 371 transitions. [2022-12-13 12:07:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 133 states have (on average 3.2406015037593985) internal successors, (431), 129 states have internal predecessors, (431), 62 states have call successors, (63), 2 states have call predecessors, (63), 3 states have return successors, (64), 64 states have call predecessors, (64), 62 states have call successors, (64) [2022-12-13 12:07:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 371 transitions. [2022-12-13 12:07:28,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-12-13 12:07:28,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:07:28,476 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 30, 30, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:07:28,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-12-13 12:07:28,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:28,677 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:07:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:07:28,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1360181895, now seen corresponding path program 88 times [2022-12-13 12:07:28,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:07:28,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968018954] [2022-12-13 12:07:28,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:07:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:07:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:07:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:07:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:07:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:07:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:07:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:07:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:07:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:07:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:07:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:07:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:07:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:07:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:07:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:07:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:07:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:07:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:07:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:07:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:07:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:07:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:07:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:07:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:07:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:07:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:07:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:07:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:07:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:07:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:07:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:07:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 12:07:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:31,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5436 backedges. 93 proven. 3539 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-12-13 12:07:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:07:31,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968018954] [2022-12-13 12:07:31,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968018954] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:07:31,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158822731] [2022-12-13 12:07:31,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:07:31,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:31,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:07:31,692 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:07:31,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-12-13 12:07:33,180 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:07:33,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:07:33,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 147 conjunts are in the unsatisfiable core [2022-12-13 12:07:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:07:35,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:07:37,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 12:07:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5436 backedges. 93 proven. 3539 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-12-13 12:07:37,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:07:38,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-12-13 12:07:38,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2022-12-13 12:07:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5436 backedges. 93 proven. 3539 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-12-13 12:07:38,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158822731] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:07:38,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:07:38,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 70, 69] total 138 [2022-12-13 12:07:38,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356307218] [2022-12-13 12:07:38,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:07:38,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2022-12-13 12:07:38,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:07:38,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2022-12-13 12:07:38,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=18334, Unknown=0, NotChecked=0, Total=18906 [2022-12-13 12:07:38,577 INFO L87 Difference]: Start difference. First operand 368 states and 371 transitions. Second operand has 138 states, 137 states have (on average 3.2262773722627736) internal successors, (442), 134 states have internal predecessors, (442), 62 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 62 states have call successors, (63) [2022-12-13 12:07:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:07:48,771 INFO L93 Difference]: Finished difference Result 512 states and 518 transitions. [2022-12-13 12:07:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-12-13 12:07:48,771 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 137 states have (on average 3.2262773722627736) internal successors, (442), 134 states have internal predecessors, (442), 62 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 62 states have call successors, (63) Word has length 375 [2022-12-13 12:07:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:07:48,773 INFO L225 Difference]: With dead ends: 512 [2022-12-13 12:07:48,773 INFO L226 Difference]: Without dead ends: 510 [2022-12-13 12:07:48,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 741 SyntacticMatches, 4 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16065 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1850, Invalid=55032, Unknown=0, NotChecked=0, Total=56882 [2022-12-13 12:07:48,776 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 718 mSDsluCounter, 7758 mSDsCounter, 0 mSdLazyCounter, 16306 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 7862 SdHoareTripleChecker+Invalid, 16478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 16306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 12:07:48,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 7862 Invalid, 16478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [172 Valid, 16306 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 12:07:48,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-12-13 12:07:49,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 377. [2022-12-13 12:07:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 313 states have (on average 1.0095846645367412) internal successors, (316), 313 states have internal predecessors, (316), 33 states have call successors, (33), 30 states have call predecessors, (33), 30 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-12-13 12:07:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 382 transitions. [2022-12-13 12:07:49,101 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 382 transitions. Word has length 375 [2022-12-13 12:07:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:07:49,101 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 382 transitions. [2022-12-13 12:07:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 137 states have (on average 3.2262773722627736) internal successors, (442), 134 states have internal predecessors, (442), 62 states have call successors, (63), 1 states have call predecessors, (63), 2 states have return successors, (63), 63 states have call predecessors, (63), 62 states have call successors, (63) [2022-12-13 12:07:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 382 transitions. [2022-12-13 12:07:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-12-13 12:07:49,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:07:49,103 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:07:49,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-12-13 12:07:49,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:49,304 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:07:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:07:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash -982098947, now seen corresponding path program 89 times [2022-12-13 12:07:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:07:49,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703123783] [2022-12-13 12:07:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:07:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:07:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:07:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:07:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:07:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:07:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:07:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:07:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:07:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:07:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:07:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:07:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:07:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:07:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:07:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:07:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:07:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:07:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:07:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:07:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:07:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:07:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:07:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:07:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:07:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:07:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:07:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:07:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:07:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:07:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:07:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:07:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 12:07:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:07:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5554 backedges. 1683 proven. 1887 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-12-13 12:07:51,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:07:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703123783] [2022-12-13 12:07:51,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703123783] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:07:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279594181] [2022-12-13 12:07:51,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:07:51,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:51,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:07:51,125 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:07:51,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-12-13 12:07:52,301 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-12-13 12:07:52,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:07:52,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 12:07:52,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:07:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5554 backedges. 1800 proven. 1770 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-12-13 12:07:53,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:07:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5554 backedges. 1800 proven. 1770 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-12-13 12:07:54,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279594181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:07:54,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:07:54,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 98 [2022-12-13 12:07:54,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947452977] [2022-12-13 12:07:54,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:07:54,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-12-13 12:07:54,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:07:54,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-12-13 12:07:54,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2181, Invalid=7325, Unknown=0, NotChecked=0, Total=9506 [2022-12-13 12:07:54,744 INFO L87 Difference]: Start difference. First operand 377 states and 382 transitions. Second operand has 98 states, 98 states have (on average 3.6020408163265305) internal successors, (353), 98 states have internal predecessors, (353), 32 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2022-12-13 12:07:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:07:56,190 INFO L93 Difference]: Finished difference Result 517 states and 523 transitions. [2022-12-13 12:07:56,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 12:07:56,190 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.6020408163265305) internal successors, (353), 98 states have internal predecessors, (353), 32 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) Word has length 379 [2022-12-13 12:07:56,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:07:56,191 INFO L225 Difference]: With dead ends: 517 [2022-12-13 12:07:56,191 INFO L226 Difference]: Without dead ends: 389 [2022-12-13 12:07:56,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 727 SyntacticMatches, 62 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7735 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3762, Invalid=12750, Unknown=0, NotChecked=0, Total=16512 [2022-12-13 12:07:56,192 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 609 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 12:07:56,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 785 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 12:07:56,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-12-13 12:07:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 372. [2022-12-13 12:07:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 308 states have (on average 1.0064935064935066) internal successors, (310), 308 states have internal predecessors, (310), 33 states have call successors, (33), 30 states have call predecessors, (33), 30 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-12-13 12:07:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 376 transitions. [2022-12-13 12:07:56,486 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 376 transitions. Word has length 379 [2022-12-13 12:07:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:07:56,487 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 376 transitions. [2022-12-13 12:07:56,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.6020408163265305) internal successors, (353), 98 states have internal predecessors, (353), 32 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2022-12-13 12:07:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 376 transitions. [2022-12-13 12:07:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-12-13 12:07:56,488 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:07:56,488 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 31, 31, 31, 31, 31, 30, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:07:56,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-12-13 12:07:56,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:07:56,689 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:07:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:07:56,690 INFO L85 PathProgramCache]: Analyzing trace with hash 580797642, now seen corresponding path program 90 times [2022-12-13 12:07:56,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:07:56,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464807885] [2022-12-13 12:07:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:07:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:07:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:08:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:08:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:08:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:08:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:08:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:08:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:08:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:08:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:08:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:08:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:08:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:08:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:08:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:08:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:08:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:08:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:08:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:08:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:08:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:08:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:08:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:08:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:08:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:08:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:08:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:08:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:08:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:08:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:08:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:08:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:08:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 12:08:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-12-13 12:08:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5685 backedges. 93 proven. 3666 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2022-12-13 12:08:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:08:00,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464807885] [2022-12-13 12:08:00,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464807885] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:08:00,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730895006] [2022-12-13 12:08:00,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 12:08:00,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:08:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:08:00,232 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:08:00,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-12-13 12:08:12,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-12-13 12:08:12,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:08:12,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 144 conjunts are in the unsatisfiable core [2022-12-13 12:08:12,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:08:13,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 12:08:13,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2022-12-13 12:08:14,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2022-12-13 12:08:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 5685 backedges. 215 proven. 3666 refuted. 0 times theorem prover too weak. 1804 trivial. 0 not checked. [2022-12-13 12:08:14,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:08:15,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730895006] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:08:15,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 12:08:15,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 103 [2022-12-13 12:08:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832833217] [2022-12-13 12:08:15,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 12:08:15,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-12-13 12:08:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:08:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-12-13 12:08:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=10542, Unknown=0, NotChecked=0, Total=10920 [2022-12-13 12:08:15,233 INFO L87 Difference]: Start difference. First operand 372 states and 376 transitions. Second operand has 103 states, 103 states have (on average 3.3592233009708736) internal successors, (346), 100 states have internal predecessors, (346), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2022-12-13 12:08:26,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 12:08:28,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 12:08:28,041 INFO L93 Difference]: Finished difference Result 536 states and 544 transitions. [2022-12-13 12:08:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-12-13 12:08:28,042 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.3592233009708736) internal successors, (346), 100 states have internal predecessors, (346), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) Word has length 383 [2022-12-13 12:08:28,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 12:08:28,044 INFO L225 Difference]: With dead ends: 536 [2022-12-13 12:08:28,044 INFO L226 Difference]: Without dead ends: 534 [2022-12-13 12:08:28,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 525 SyntacticMatches, 14 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11970 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1577, Invalid=41479, Unknown=0, NotChecked=0, Total=43056 [2022-12-13 12:08:28,047 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 559 mSDsluCounter, 7282 mSDsCounter, 0 mSdLazyCounter, 14853 mSolverCounterSat, 172 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 7387 SdHoareTripleChecker+Invalid, 15026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 14853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-13 12:08:28,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 7387 Invalid, 15026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 14853 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-12-13 12:08:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-13 12:08:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 390. [2022-12-13 12:08:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 322 states have (on average 1.0124223602484472) internal successors, (326), 323 states have internal predecessors, (326), 36 states have call successors, (36), 31 states have call predecessors, (36), 31 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-12-13 12:08:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 398 transitions. [2022-12-13 12:08:28,372 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 398 transitions. Word has length 383 [2022-12-13 12:08:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 12:08:28,372 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 398 transitions. [2022-12-13 12:08:28,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.3592233009708736) internal successors, (346), 100 states have internal predecessors, (346), 33 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (35), 35 states have call predecessors, (35), 33 states have call successors, (35) [2022-12-13 12:08:28,373 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 398 transitions. [2022-12-13 12:08:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2022-12-13 12:08:28,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 12:08:28,374 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 31, 31, 31, 31, 31, 31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:08:28,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-12-13 12:08:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:08:28,575 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 12:08:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:08:28,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1977420992, now seen corresponding path program 91 times [2022-12-13 12:08:28,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:08:28,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7998860] [2022-12-13 12:08:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:08:28,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:08:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 12:08:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 12:08:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 12:08:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 12:08:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 12:08:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 12:08:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 12:08:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 12:08:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 12:08:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 12:08:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 12:08:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 12:08:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 12:08:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 12:08:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 12:08:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 12:08:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 12:08:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 12:08:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 12:08:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 12:08:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 12:08:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 12:08:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 12:08:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 12:08:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 12:08:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 12:08:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 12:08:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-12-13 12:08:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-12-13 12:08:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-12-13 12:08:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-12-13 12:08:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 12:08:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-12-13 12:08:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 96 proven. 3781 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2022-12-13 12:08:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:08:31,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7998860] [2022-12-13 12:08:31,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7998860] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:08:31,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510603367] [2022-12-13 12:08:31,935 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 12:08:31,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:08:31,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:08:31,935 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:08:31,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c7ed64-0945-4f5a-9359-593b0626a216/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-12-13 12:08:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:08:32,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 151 conjunts are in the unsatisfiable core [2022-12-13 12:08:32,296 INFO L286 TraceCheckSpWp]: Computing forward predicates...