./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/mbpr2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a --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 a98ea70d5d9f752732070144a56514c68e9571f139726211e2f0ade721d6c5f3 --- 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-b5237d8 [2022-11-21 17:27:26,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:27:26,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:27:26,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:27:26,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:27:26,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:27:26,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:27:26,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:27:26,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:27:26,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:27:26,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:27:26,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:27:26,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:27:26,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:27:26,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:27:26,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:27:26,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:27:26,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:27:26,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:27:26,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:27:26,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:27:26,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:27:26,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:27:26,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:27:26,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:27:26,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:27:26,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:27:26,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:27:26,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:27:26,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:27:26,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:27:26,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:27:26,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:27:26,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:27:26,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:27:26,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:27:26,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:27:26,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:27:26,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:27:26,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:27:26,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:27:26,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:27:26,137 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:27:26,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:27:26,137 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:27:26,138 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:27:26,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:27:26,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:27:26,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:27:26,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:27:26,139 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:27:26,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:27:26,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:27:26,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:27:26,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:27:26,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:27:26,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:27:26,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:27:26,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:27:26,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:27:26,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:27:26,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:27:26,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:27:26,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:27:26,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:27:26,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:27:26,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:27:26,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:27:26,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:27:26,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:27:26,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:27:26,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:27:26,143 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:27:26,143 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:27:26,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:27:26,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98ea70d5d9f752732070144a56514c68e9571f139726211e2f0ade721d6c5f3 [2022-11-21 17:27:26,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:27:26,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:27:26,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:27:26,457 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:27:26,458 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:27:26,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-tiling/mbpr2.c [2022-11-21 17:27:29,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:27:29,785 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:27:29,785 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/sv-benchmarks/c/array-tiling/mbpr2.c [2022-11-21 17:27:29,792 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data/668d7c9d8/3b5ff1c775414614b3cbbd98a4272e6b/FLAG7b321df74 [2022-11-21 17:27:29,807 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data/668d7c9d8/3b5ff1c775414614b3cbbd98a4272e6b [2022-11-21 17:27:29,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:27:29,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:27:29,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:27:29,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:27:29,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:27:29,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:29" (1/1) ... [2022-11-21 17:27:29,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2e525d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:29, skipping insertion in model container [2022-11-21 17:27:29,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:29" (1/1) ... [2022-11-21 17:27:29,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:27:29,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:27:30,045 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_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/sv-benchmarks/c/array-tiling/mbpr2.c[396,409] [2022-11-21 17:27:30,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:27:30,074 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:27:30,088 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_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/sv-benchmarks/c/array-tiling/mbpr2.c[396,409] [2022-11-21 17:27:30,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:27:30,112 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:27:30,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30 WrapperNode [2022-11-21 17:27:30,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:27:30,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:27:30,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:27:30,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:27:30,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,151 INFO L138 Inliner]: procedures = 15, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-11-21 17:27:30,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:27:30,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:27:30,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:27:30,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:27:30,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:27:30,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:27:30,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:27:30,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:27:30,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (1/1) ... [2022-11-21 17:27:30,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:27:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:30,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:27:30,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:27:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:27:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:27:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:27:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:27:30,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:27:30,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:27:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:27:30,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:27:30,341 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:27:30,343 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:27:30,549 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:27:30,556 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:27:30,556 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:27:30,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:30 BoogieIcfgContainer [2022-11-21 17:27:30,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:27:30,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:27:30,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:27:30,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:27:30,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:27:29" (1/3) ... [2022-11-21 17:27:30,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3ffbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:30, skipping insertion in model container [2022-11-21 17:27:30,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:30" (2/3) ... [2022-11-21 17:27:30,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3ffbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:30, skipping insertion in model container [2022-11-21 17:27:30,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:30" (3/3) ... [2022-11-21 17:27:30,568 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr2.c [2022-11-21 17:27:30,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:27:30,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:27:30,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:27:30,648 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;@13922bf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:27:30,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:27:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:30,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:27:30,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:30,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:30,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash -669443655, now seen corresponding path program 1 times [2022-11-21 17:27:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:30,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811606569] [2022-11-21 17:27:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:31,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:31,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811606569] [2022-11-21 17:27:31,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811606569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:31,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:31,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:27:31,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111024957] [2022-11-21 17:27:31,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:31,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:27:31,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:27:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:27:31,072 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:31,090 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2022-11-21 17:27:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:27:31,092 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 17:27:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:31,100 INFO L225 Difference]: With dead ends: 53 [2022-11-21 17:27:31,101 INFO L226 Difference]: Without dead ends: 24 [2022-11-21 17:27:31,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:27:31,107 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-11-21 17:27:31,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:27:31,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-21 17:27:31,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-21 17:27:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-21 17:27:31,139 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2022-11-21 17:27:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:31,140 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-21 17:27:31,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-21 17:27:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:27:31,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:31,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:31,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:27:31,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:31,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash -893920799, now seen corresponding path program 1 times [2022-11-21 17:27:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:31,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105678680] [2022-11-21 17:27:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:31,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:31,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105678680] [2022-11-21 17:27:31,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105678680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:31,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:31,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:27:31,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610075605] [2022-11-21 17:27:31,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:31,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:27:31,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:27:31,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:27:31,393 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:31,491 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-21 17:27:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:27:31,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 17:27:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:31,492 INFO L225 Difference]: With dead ends: 33 [2022-11-21 17:27:31,492 INFO L226 Difference]: Without dead ends: 31 [2022-11-21 17:27:31,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:27:31,494 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:31,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 77 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:27:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-21 17:27:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-21 17:27:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-21 17:27:31,512 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 15 [2022-11-21 17:27:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:31,513 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-21 17:27:31,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-21 17:27:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:27:31,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:31,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:31,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:27:31,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash -893861217, now seen corresponding path program 1 times [2022-11-21 17:27:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:31,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168212717] [2022-11-21 17:27:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:31,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168212717] [2022-11-21 17:27:31,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168212717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:31,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:31,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:27:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077382775] [2022-11-21 17:27:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:27:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:27:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:27:31,936 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:32,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:32,053 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2022-11-21 17:27:32,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:27:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 17:27:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:32,057 INFO L225 Difference]: With dead ends: 50 [2022-11-21 17:27:32,057 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 17:27:32,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:27:32,065 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:32,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 22 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:27:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 17:27:32,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-11-21 17:27:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-11-21 17:27:32,079 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 15 [2022-11-21 17:27:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:32,080 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-11-21 17:27:32,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-21 17:27:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 17:27:32,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:32,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:27:32,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:32,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash -815951211, now seen corresponding path program 1 times [2022-11-21 17:27:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:32,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549977945] [2022-11-21 17:27:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:32,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:32,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549977945] [2022-11-21 17:27:32,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549977945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:32,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:32,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:27:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113699234] [2022-11-21 17:27:32,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:32,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:27:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:27:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:27:32,261 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:32,289 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2022-11-21 17:27:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:27:32,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-21 17:27:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:32,291 INFO L225 Difference]: With dead ends: 43 [2022-11-21 17:27:32,291 INFO L226 Difference]: Without dead ends: 28 [2022-11-21 17:27:32,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:27:32,293 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:32,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:27:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-21 17:27:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-21 17:27:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:32,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-21 17:27:32,299 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2022-11-21 17:27:32,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:32,300 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-21 17:27:32,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-21 17:27:32,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 17:27:32,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:32,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:32,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:27:32,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:32,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1208978221, now seen corresponding path program 1 times [2022-11-21 17:27:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:32,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844620539] [2022-11-21 17:27:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:33,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:33,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844620539] [2022-11-21 17:27:33,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844620539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:33,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161696179] [2022-11-21 17:27:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:33,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:33,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:33,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:27:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:33,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:27:33,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:33,446 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 16 treesize of output 12 [2022-11-21 17:27:33,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:27:33,499 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 21 treesize of output 20 [2022-11-21 17:27:33,597 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 29 treesize of output 28 [2022-11-21 17:27:33,631 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 26 treesize of output 14 [2022-11-21 17:27:33,716 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 [2022-11-21 17:27:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:33,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:33,967 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 17 treesize of output 15 [2022-11-21 17:27:33,976 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 26 treesize of output 24 [2022-11-21 17:27:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:34,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161696179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:34,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:27:34,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-11-21 17:27:34,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508630859] [2022-11-21 17:27:34,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:34,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:27:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:27:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:27:34,047 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:34,373 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-11-21 17:27:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:27:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-21 17:27:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:34,383 INFO L225 Difference]: With dead ends: 73 [2022-11-21 17:27:34,384 INFO L226 Difference]: Without dead ends: 52 [2022-11-21 17:27:34,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-21 17:27:34,386 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 174 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:34,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 76 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:27:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-21 17:27:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 30. [2022-11-21 17:27:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-21 17:27:34,401 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 23 [2022-11-21 17:27:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:34,402 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-21 17:27:34,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-21 17:27:34,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 17:27:34,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:34,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:34,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:27:34,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:34,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:34,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:34,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1368311994, now seen corresponding path program 1 times [2022-11-21 17:27:34,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:34,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600025024] [2022-11-21 17:27:34,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:34,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:35,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:35,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:35,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600025024] [2022-11-21 17:27:35,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600025024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:35,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373050109] [2022-11-21 17:27:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:35,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:35,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:35,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:27:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:35,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-21 17:27:35,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:35,213 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 16 treesize of output 12 [2022-11-21 17:27:35,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:27:35,229 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 21 treesize of output 20 [2022-11-21 17:27:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:35,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:35,494 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 17 treesize of output 15 [2022-11-21 17:27:35,497 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 20 treesize of output 16 [2022-11-21 17:27:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:35,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373050109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:35,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:27:35,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 18 [2022-11-21 17:27:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532190237] [2022-11-21 17:27:35,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:35,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:27:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:35,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:27:35,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:27:35,522 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:35,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:35,838 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-11-21 17:27:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:27:35,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-21 17:27:35,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:35,839 INFO L225 Difference]: With dead ends: 56 [2022-11-21 17:27:35,839 INFO L226 Difference]: Without dead ends: 54 [2022-11-21 17:27:35,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:27:35,841 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:35,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 95 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:27:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-21 17:27:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2022-11-21 17:27:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-21 17:27:35,853 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 29 [2022-11-21 17:27:35,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:35,853 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-21 17:27:35,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 18 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:35,853 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-21 17:27:35,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 17:27:35,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:35,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:35,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:36,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 17:27:36,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:36,062 INFO L85 PathProgramCache]: Analyzing trace with hash 21305209, now seen corresponding path program 2 times [2022-11-21 17:27:36,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:36,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866574676] [2022-11-21 17:27:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:36,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:36,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:36,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866574676] [2022-11-21 17:27:36,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866574676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480216902] [2022-11-21 17:27:36,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:27:36,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:36,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:36,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:36,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:27:36,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:27:36,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:36,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:27:36,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:36,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:37,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480216902] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:37,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:27:37,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2022-11-21 17:27:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040091822] [2022-11-21 17:27:37,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:27:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:27:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:27:37,148 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:37,495 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2022-11-21 17:27:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:27:37,496 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-21 17:27:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:37,497 INFO L225 Difference]: With dead ends: 97 [2022-11-21 17:27:37,497 INFO L226 Difference]: Without dead ends: 54 [2022-11-21 17:27:37,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2022-11-21 17:27:37,498 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 228 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:37,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 100 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:27:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-21 17:27:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2022-11-21 17:27:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-11-21 17:27:37,507 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 35 [2022-11-21 17:27:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:37,508 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-21 17:27:37,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-11-21 17:27:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 17:27:37,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:37,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:37,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:37,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1279882925, now seen corresponding path program 3 times [2022-11-21 17:27:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:37,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902453882] [2022-11-21 17:27:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:37,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:38,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:27:38,269 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-21 17:27:38,278 INFO L158 Benchmark]: Toolchain (without parser) took 8466.12ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 90.2MB in the beginning and 145.2MB in the end (delta: -54.9MB). Peak memory consumption was 97.0MB. Max. memory is 16.1GB. [2022-11-21 17:27:38,278 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:27:38,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.89ms. Allocated memory is still 123.7MB. Free memory was 90.2MB in the beginning and 89.4MB in the end (delta: 834.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 17:27:38,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.79ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 87.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:27:38,279 INFO L158 Benchmark]: Boogie Preprocessor took 30.36ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 86.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:27:38,280 INFO L158 Benchmark]: RCFGBuilder took 375.55ms. Allocated memory is still 123.7MB. Free memory was 86.3MB in the beginning and 73.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 17:27:38,280 INFO L158 Benchmark]: TraceAbstraction took 7716.10ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 73.2MB in the beginning and 145.2MB in the end (delta: -72.0MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2022-11-21 17:27:38,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.89ms. Allocated memory is still 123.7MB. Free memory was 90.2MB in the beginning and 89.4MB in the end (delta: 834.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.79ms. Allocated memory is still 123.7MB. Free memory was 89.4MB in the beginning and 87.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.36ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 86.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 375.55ms. Allocated memory is still 123.7MB. Free memory was 86.3MB in the beginning and 73.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7716.10ms. Allocated memory was 123.7MB in the beginning and 180.4MB in the end (delta: 56.6MB). Free memory was 73.2MB in the beginning and 145.2MB in the end (delta: -72.0MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-21 17:27:38,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a --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 a98ea70d5d9f752732070144a56514c68e9571f139726211e2f0ade721d6c5f3 --- 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-b5237d8 [2022-11-21 17:27:40,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:27:40,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:27:40,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:27:40,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:27:40,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:27:40,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:27:40,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:27:40,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:27:40,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:27:40,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:27:40,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:27:40,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:27:40,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:27:40,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:27:40,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:27:40,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:27:40,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:27:40,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:27:40,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:27:40,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:27:40,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:27:40,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:27:40,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:27:40,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:27:40,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:27:40,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:27:40,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:27:40,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:27:40,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:27:40,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:27:40,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:27:40,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:27:40,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:27:40,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:27:40,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:27:40,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:27:40,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:27:40,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:27:40,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:27:40,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:27:40,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-21 17:27:40,920 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:27:40,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:27:40,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:27:40,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:27:40,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:27:40,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:27:40,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:27:40,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:27:40,925 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:27:40,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:27:40,925 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:27:40,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:27:40,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:27:40,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:27:40,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:27:40,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:27:40,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 17:27:40,927 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 17:27:40,927 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 17:27:40,927 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:27:40,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:27:40,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:27:40,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:27:40,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:27:40,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:27:40,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:27:40,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:27:40,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:27:40,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:27:40,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:27:40,929 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 17:27:40,930 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 17:27:40,930 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:27:40,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:27:40,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:27:40,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 17:27:40,932 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98ea70d5d9f752732070144a56514c68e9571f139726211e2f0ade721d6c5f3 [2022-11-21 17:27:41,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:27:41,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:27:41,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:27:41,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:27:41,318 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:27:41,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/array-tiling/mbpr2.c [2022-11-21 17:27:44,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:27:44,668 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:27:44,668 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/sv-benchmarks/c/array-tiling/mbpr2.c [2022-11-21 17:27:44,675 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data/fdfd17eec/e8b3a1d93ee34f139d1cfd4ba90e08f8/FLAG371d8059e [2022-11-21 17:27:44,689 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/data/fdfd17eec/e8b3a1d93ee34f139d1cfd4ba90e08f8 [2022-11-21 17:27:44,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:27:44,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:27:44,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:27:44,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:27:44,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:27:44,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:44,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574c1e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44, skipping insertion in model container [2022-11-21 17:27:44,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:44,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:27:44,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:27:44,898 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_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/sv-benchmarks/c/array-tiling/mbpr2.c[396,409] [2022-11-21 17:27:44,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:27:44,937 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:27:44,952 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_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/sv-benchmarks/c/array-tiling/mbpr2.c[396,409] [2022-11-21 17:27:44,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:27:44,978 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:27:44,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44 WrapperNode [2022-11-21 17:27:44,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:27:44,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:27:44,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:27:44,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:27:44,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:44,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,019 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2022-11-21 17:27:45,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:27:45,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:27:45,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:27:45,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:27:45,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,048 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:27:45,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:27:45,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:27:45,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:27:45,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (1/1) ... [2022-11-21 17:27:45,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:27:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:45,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:27:45,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:27:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:27:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 17:27:45,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:27:45,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 17:27:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:27:45,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:27:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 17:27:45,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:27:45,271 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:27:45,273 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:27:45,626 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:27:45,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:27:45,631 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:27:45,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:45 BoogieIcfgContainer [2022-11-21 17:27:45,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:27:45,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:27:45,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:27:45,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:27:45,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:27:44" (1/3) ... [2022-11-21 17:27:45,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bc311f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:45, skipping insertion in model container [2022-11-21 17:27:45,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:27:44" (2/3) ... [2022-11-21 17:27:45,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23bc311f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:27:45, skipping insertion in model container [2022-11-21 17:27:45,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:27:45" (3/3) ... [2022-11-21 17:27:45,655 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr2.c [2022-11-21 17:27:45,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:27:45,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:27:45,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:27:45,759 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;@6905ed0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:27:45,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:27:45,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:27:45,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:45,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:45,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:45,778 INFO L85 PathProgramCache]: Analyzing trace with hash -669443655, now seen corresponding path program 1 times [2022-11-21 17:27:45,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:45,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935782277] [2022-11-21 17:27:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:45,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:45,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:45,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:45,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-21 17:27:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:45,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 17:27:45,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:46,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:27:46,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:46,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935782277] [2022-11-21 17:27:46,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935782277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:46,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:46,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:27:46,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712486778] [2022-11-21 17:27:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:46,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:27:46,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:46,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:27:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:27:46,078 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 28 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:46,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:46,103 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2022-11-21 17:27:46,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:27:46,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 17:27:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:46,114 INFO L225 Difference]: With dead ends: 53 [2022-11-21 17:27:46,115 INFO L226 Difference]: Without dead ends: 24 [2022-11-21 17:27:46,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:27:46,123 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-11-21 17:27:46,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:27:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-21 17:27:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-21 17:27:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-21 17:27:46,163 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2022-11-21 17:27:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:46,164 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-21 17:27:46,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:46,165 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-21 17:27:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:27:46,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:46,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:46,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-21 17:27:46,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:46,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:46,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash -893920799, now seen corresponding path program 1 times [2022-11-21 17:27:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:46,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629897958] [2022-11-21 17:27:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:46,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:46,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:46,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:46,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 17:27:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:46,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:27:46,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:46,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:27:46,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:46,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629897958] [2022-11-21 17:27:46,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629897958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:46,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:46,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:27:46,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138094711] [2022-11-21 17:27:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:27:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:27:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:27:46,565 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:46,873 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2022-11-21 17:27:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:27:46,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 17:27:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:46,875 INFO L225 Difference]: With dead ends: 46 [2022-11-21 17:27:46,876 INFO L226 Difference]: Without dead ends: 32 [2022-11-21 17:27:46,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:27:46,878 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:46,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 17:27:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-21 17:27:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2022-11-21 17:27:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-21 17:27:46,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 15 [2022-11-21 17:27:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:46,893 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-21 17:27:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-21 17:27:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 17:27:46,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:46,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:46,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:47,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:47,110 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash -816010793, now seen corresponding path program 1 times [2022-11-21 17:27:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:47,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437192270] [2022-11-21 17:27:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:47,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:47,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:47,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:47,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-21 17:27:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:47,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:27:47,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:47,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:47,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:27:47,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:47,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437192270] [2022-11-21 17:27:47,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437192270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:47,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:47,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:27:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444489487] [2022-11-21 17:27:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:47,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:27:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:27:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:27:47,351 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:47,374 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-11-21 17:27:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:27:47,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-21 17:27:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:47,376 INFO L225 Difference]: With dead ends: 39 [2022-11-21 17:27:47,376 INFO L226 Difference]: Without dead ends: 26 [2022-11-21 17:27:47,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:27:47,378 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:47,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:27:47,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-21 17:27:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-21 17:27:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-21 17:27:47,385 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 23 [2022-11-21 17:27:47,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:47,385 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-21 17:27:47,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:47,386 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-21 17:27:47,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 17:27:47,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:47,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:47,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:47,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:47,599 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1209037803, now seen corresponding path program 1 times [2022-11-21 17:27:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:47,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977139449] [2022-11-21 17:27:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:47,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:47,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:47,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:47,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-21 17:27:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:47,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:27:47,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:27:47,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:27:47,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:47,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977139449] [2022-11-21 17:27:47,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977139449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:47,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:47,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:27:47,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646580419] [2022-11-21 17:27:47,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:47,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:27:47,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:27:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:27:47,743 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:47,802 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-11-21 17:27:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:27:47,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-21 17:27:47,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:47,806 INFO L225 Difference]: With dead ends: 36 [2022-11-21 17:27:47,808 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 17:27:47,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:27:47,814 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:47,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 76 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:27:47,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 17:27:47,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2022-11-21 17:27:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-21 17:27:47,831 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2022-11-21 17:27:47,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:47,831 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-21 17:27:47,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-21 17:27:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-21 17:27:47,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:47,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:47,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:48,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:48,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:48,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:48,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1208978221, now seen corresponding path program 1 times [2022-11-21 17:27:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:48,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511610806] [2022-11-21 17:27:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:48,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:48,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:48,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:48,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-21 17:27:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:48,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:27:48,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:48,266 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 16 treesize of output 12 [2022-11-21 17:27:48,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:27:48,326 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 21 treesize of output 20 [2022-11-21 17:27:48,444 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 29 treesize of output 28 [2022-11-21 17:27:48,470 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 23 treesize of output 11 [2022-11-21 17:27:48,552 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 29 treesize of output 17 [2022-11-21 17:27:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:48,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:48,869 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 13 [2022-11-21 17:27:48,875 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 22 treesize of output 20 [2022-11-21 17:27:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:49,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511610806] [2022-11-21 17:27:49,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511610806] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:49,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:27:49,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-21 17:27:49,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354416247] [2022-11-21 17:27:49,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:49,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:27:49,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:49,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:27:49,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:27:49,005 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:49,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:49,606 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2022-11-21 17:27:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:27:49,607 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-21 17:27:49,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:49,607 INFO L225 Difference]: With dead ends: 73 [2022-11-21 17:27:49,608 INFO L226 Difference]: Without dead ends: 52 [2022-11-21 17:27:49,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:27:49,609 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 105 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:49,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 69 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:27:49,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-21 17:27:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 30. [2022-11-21 17:27:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-21 17:27:49,618 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 23 [2022-11-21 17:27:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:49,618 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-21 17:27:49,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-21 17:27:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 17:27:49,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:49,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:49,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:49,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:49,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:49,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1368311994, now seen corresponding path program 1 times [2022-11-21 17:27:49,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:49,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299994269] [2022-11-21 17:27:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:49,836 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:49,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-21 17:27:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:49,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:27:49,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:50,043 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 16 treesize of output 12 [2022-11-21 17:27:50,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:27:50,089 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 21 treesize of output 20 [2022-11-21 17:27:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:50,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:50,540 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 17 treesize of output 15 [2022-11-21 17:27:50,544 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 20 treesize of output 16 [2022-11-21 17:27:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:50,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299994269] [2022-11-21 17:27:50,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299994269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:50,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:27:50,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-21 17:27:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296697403] [2022-11-21 17:27:50,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:50,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:27:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:27:50,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:27:50,586 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:51,288 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-11-21 17:27:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:27:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-21 17:27:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:51,290 INFO L225 Difference]: With dead ends: 56 [2022-11-21 17:27:51,290 INFO L226 Difference]: Without dead ends: 54 [2022-11-21 17:27:51,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:27:51,291 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:51,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 97 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:27:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-21 17:27:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 36. [2022-11-21 17:27:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-21 17:27:51,301 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 29 [2022-11-21 17:27:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:51,301 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-21 17:27:51,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-21 17:27:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 17:27:51,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:51,302 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:51,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:51,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:51,520 INFO L85 PathProgramCache]: Analyzing trace with hash 21305209, now seen corresponding path program 2 times [2022-11-21 17:27:51,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:51,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384479427] [2022-11-21 17:27:51,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:27:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:51,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:51,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-21 17:27:51,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:27:51,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:51,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:27:51,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:55,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:27:57,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:27:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384479427] [2022-11-21 17:27:57,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384479427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:57,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:27:57,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-11-21 17:27:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418716233] [2022-11-21 17:27:57,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 17:27:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:27:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 17:27:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:27:57,190 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:59,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:59,314 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2022-11-21 17:27:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:27:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-21 17:27:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:59,319 INFO L225 Difference]: With dead ends: 97 [2022-11-21 17:27:59,319 INFO L226 Difference]: Without dead ends: 54 [2022-11-21 17:27:59,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:27:59,320 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 238 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:59,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 85 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:27:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-21 17:27:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2022-11-21 17:27:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-11-21 17:27:59,333 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 35 [2022-11-21 17:27:59,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:59,333 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-11-21 17:27:59,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-11-21 17:27:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 17:27:59,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:59,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:59,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:59,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:27:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1279882925, now seen corresponding path program 3 times [2022-11-21 17:27:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:27:59,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072268807] [2022-11-21 17:27:59,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:27:59,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:27:59,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:27:59,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:27:59,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-21 17:27:59,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 17:27:59,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:59,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:27:59,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:59,807 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 16 treesize of output 12 [2022-11-21 17:27:59,862 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 29 treesize of output 28 [2022-11-21 17:27:59,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:27:59,923 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 26 treesize of output 25 [2022-11-21 17:27:59,949 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 [2022-11-21 17:28:00,130 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 29 treesize of output 17 [2022-11-21 17:28:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 17:28:00,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:00,903 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 26 treesize of output 24 [2022-11-21 17:28:00,906 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 62 treesize of output 58 [2022-11-21 17:28:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 17:28:01,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:28:01,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072268807] [2022-11-21 17:28:01,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072268807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:01,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:28:01,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2022-11-21 17:28:01,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81272738] [2022-11-21 17:28:01,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 17:28:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:28:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 17:28:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:28:01,014 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:03,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:28:05,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:28:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:06,445 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2022-11-21 17:28:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:28:06,446 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-21 17:28:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:06,447 INFO L225 Difference]: With dead ends: 96 [2022-11-21 17:28:06,447 INFO L226 Difference]: Without dead ends: 86 [2022-11-21 17:28:06,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-21 17:28:06,449 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 148 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 28 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:06,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 131 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 233 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-11-21 17:28:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-21 17:28:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 44. [2022-11-21 17:28:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2022-11-21 17:28:06,459 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 43 [2022-11-21 17:28:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:06,460 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2022-11-21 17:28:06,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2022-11-21 17:28:06,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-21 17:28:06,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:06,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:06,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-21 17:28:06,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:06,674 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:06,674 INFO L85 PathProgramCache]: Analyzing trace with hash 886855915, now seen corresponding path program 4 times [2022-11-21 17:28:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:28:06,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217548040] [2022-11-21 17:28:06,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:28:06,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:28:06,676 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:28:06,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-21 17:28:06,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:28:06,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:06,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 17:28:06,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:06,965 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 16 treesize of output 12 [2022-11-21 17:28:07,013 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 [2022-11-21 17:28:07,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:28:07,130 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 26 treesize of output 25 [2022-11-21 17:28:07,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:28:07,152 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 26 treesize of output 25 [2022-11-21 17:28:07,214 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 29 treesize of output 28 [2022-11-21 17:28:07,233 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 29 treesize of output 13 [2022-11-21 17:28:07,494 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 29 treesize of output 17 [2022-11-21 17:28:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:07,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:08,358 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 17 treesize of output 15 [2022-11-21 17:28:08,361 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 [2022-11-21 17:28:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:28:08,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:28:08,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217548040] [2022-11-21 17:28:08,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217548040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:08,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:28:08,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2022-11-21 17:28:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619315101] [2022-11-21 17:28:08,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:28:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:28:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:28:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:28:08,569 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:10,047 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2022-11-21 17:28:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:28:10,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-21 17:28:10,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:10,049 INFO L225 Difference]: With dead ends: 92 [2022-11-21 17:28:10,050 INFO L226 Difference]: Without dead ends: 82 [2022-11-21 17:28:10,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2022-11-21 17:28:10,051 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 245 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:10,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 119 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 17:28:10,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-21 17:28:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 50. [2022-11-21 17:28:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2022-11-21 17:28:10,063 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 43 [2022-11-21 17:28:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:10,064 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2022-11-21 17:28:10,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2022-11-21 17:28:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-21 17:28:10,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:10,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:10,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-21 17:28:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:10,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1854428834, now seen corresponding path program 5 times [2022-11-21 17:28:10,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:28:10,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329700497] [2022-11-21 17:28:10,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:28:10,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:10,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:28:10,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:28:10,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-21 17:28:10,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-21 17:28:10,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:10,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:28:10,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:10,604 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 16 treesize of output 12 [2022-11-21 17:28:10,647 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 [2022-11-21 17:28:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:28:11,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:11,420 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 17 treesize of output 15 [2022-11-21 17:28:11,423 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 20 treesize of output 16 [2022-11-21 17:28:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 17:28:11,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:28:11,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329700497] [2022-11-21 17:28:11,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329700497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:11,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:28:11,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2022-11-21 17:28:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513370516] [2022-11-21 17:28:11,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 17:28:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:28:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 17:28:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:28:11,505 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:14,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:28:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:14,990 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2022-11-21 17:28:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 17:28:14,991 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-21 17:28:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:14,991 INFO L225 Difference]: With dead ends: 86 [2022-11-21 17:28:14,992 INFO L226 Difference]: Without dead ends: 84 [2022-11-21 17:28:14,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=1140, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 17:28:14,993 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 232 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:14,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 162 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 472 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 17:28:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-21 17:28:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2022-11-21 17:28:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2022-11-21 17:28:15,007 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 49 [2022-11-21 17:28:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:15,008 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2022-11-21 17:28:15,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2022-11-21 17:28:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-21 17:28:15,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:15,009 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:15,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:15,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:15,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:15,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2084333679, now seen corresponding path program 6 times [2022-11-21 17:28:15,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:28:15,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281179350] [2022-11-21 17:28:15,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:28:15,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:15,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:28:15,217 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:28:15,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-21 17:28:15,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-21 17:28:15,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:15,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 17:28:15,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 17:28:21,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 46 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 17:28:25,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:28:25,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281179350] [2022-11-21 17:28:25,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281179350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:25,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:28:25,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-11-21 17:28:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997195320] [2022-11-21 17:28:25,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:25,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-21 17:28:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:28:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-21 17:28:25,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:28:25,954 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:31,572 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2022-11-21 17:28:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:28:31,576 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-21 17:28:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:31,576 INFO L225 Difference]: With dead ends: 141 [2022-11-21 17:28:31,576 INFO L226 Difference]: Without dead ends: 70 [2022-11-21 17:28:31,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=225, Invalid=587, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:28:31,578 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 347 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:31,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 168 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 17:28:31,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-21 17:28:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2022-11-21 17:28:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:31,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2022-11-21 17:28:31,605 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 55 [2022-11-21 17:28:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:31,605 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2022-11-21 17:28:31,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2022-11-21 17:28:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 17:28:31,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:31,611 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:31,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:31,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:31,829 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash 419308485, now seen corresponding path program 7 times [2022-11-21 17:28:31,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:28:31,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204316916] [2022-11-21 17:28:31,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:28:31,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:31,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:28:31,832 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:28:31,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-21 17:28:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:31,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:28:31,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:32,136 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 16 treesize of output 12 [2022-11-21 17:28:32,177 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 29 treesize of output 28 [2022-11-21 17:28:32,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:28:32,254 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 26 treesize of output 25 [2022-11-21 17:28:32,268 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 [2022-11-21 17:28:32,636 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 29 treesize of output 17 [2022-11-21 17:28:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 17:28:32,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:33,522 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 26 treesize of output 24 [2022-11-21 17:28:33,525 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 62 treesize of output 58 [2022-11-21 17:28:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 39 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-21 17:28:33,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:28:33,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204316916] [2022-11-21 17:28:33,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204316916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:33,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:28:33,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2022-11-21 17:28:33,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572075916] [2022-11-21 17:28:33,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:33,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 17:28:33,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:28:33,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 17:28:33,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-11-21 17:28:33,697 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:36,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:28:38,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:28:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:39,594 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2022-11-21 17:28:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:28:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-21 17:28:39,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:39,596 INFO L225 Difference]: With dead ends: 106 [2022-11-21 17:28:39,597 INFO L226 Difference]: Without dead ends: 96 [2022-11-21 17:28:39,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:28:39,598 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 240 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 43 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:39,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 181 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 419 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-21 17:28:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-21 17:28:39,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 64. [2022-11-21 17:28:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2022-11-21 17:28:39,612 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 63 [2022-11-21 17:28:39,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:39,613 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2022-11-21 17:28:39,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2022-11-21 17:28:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-21 17:28:39,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:39,614 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:39,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:39,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:39,827 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:39,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash 26281475, now seen corresponding path program 8 times [2022-11-21 17:28:39,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:28:39,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399128687] [2022-11-21 17:28:39,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:28:39,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:39,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:28:39,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:28:39,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-21 17:28:39,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:28:39,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:39,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-21 17:28:40,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:40,201 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 16 treesize of output 12 [2022-11-21 17:28:40,258 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 [2022-11-21 17:28:40,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:28:40,376 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 26 treesize of output 25 [2022-11-21 17:28:40,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:28:40,397 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 26 treesize of output 25 [2022-11-21 17:28:40,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:28:40,476 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 26 treesize of output 25 [2022-11-21 17:28:40,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:28:40,504 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 26 treesize of output 25 [2022-11-21 17:28:40,573 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 29 treesize of output 28 [2022-11-21 17:28:40,594 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 29 treesize of output 13 [2022-11-21 17:28:41,026 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 29 treesize of output 17 [2022-11-21 17:28:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:41,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:42,818 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 17 treesize of output 15 [2022-11-21 17:28:42,820 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 [2022-11-21 17:28:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 72 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:28:43,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:28:43,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399128687] [2022-11-21 17:28:43,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399128687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:43,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:28:43,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2022-11-21 17:28:43,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368226619] [2022-11-21 17:28:43,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:43,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-21 17:28:43,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:28:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-21 17:28:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-11-21 17:28:43,242 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:46,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:28:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:48,415 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2022-11-21 17:28:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 17:28:48,417 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-21 17:28:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:48,419 INFO L225 Difference]: With dead ends: 143 [2022-11-21 17:28:48,419 INFO L226 Difference]: Without dead ends: 133 [2022-11-21 17:28:48,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 93 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=313, Invalid=1493, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 17:28:48,421 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 482 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:48,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 226 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 739 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 17:28:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-21 17:28:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 70. [2022-11-21 17:28:48,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 69 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2022-11-21 17:28:48,452 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 63 [2022-11-21 17:28:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:48,452 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2022-11-21 17:28:48,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:28:48,455 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2022-11-21 17:28:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-21 17:28:48,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:48,457 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:48,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:48,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:48,671 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:28:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1832115082, now seen corresponding path program 9 times [2022-11-21 17:28:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:28:48,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955229430] [2022-11-21 17:28:48,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:28:48,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:28:48,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:28:48,674 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:28:48,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-21 17:28:48,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 17:28:48,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:48,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-21 17:28:48,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:52,185 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 16 treesize of output 12 [2022-11-21 17:28:52,748 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 29 treesize of output 28 [2022-11-21 17:28:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:28:54,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:58,850 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 17 treesize of output 15 [2022-11-21 17:28:58,895 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 20 treesize of output 16 [2022-11-21 17:29:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:29:02,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:29:02,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955229430] [2022-11-21 17:29:02,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955229430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:02,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:29:02,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17] total 37 [2022-11-21 17:29:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594479261] [2022-11-21 17:29:02,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:02,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-21 17:29:02,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:29:02,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-21 17:29:02,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 17:29:02,595 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:26,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:29:28,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:29:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:41,438 INFO L93 Difference]: Finished difference Result 222 states and 239 transitions. [2022-11-21 17:29:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-11-21 17:29:41,439 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-21 17:29:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:41,439 INFO L225 Difference]: With dead ends: 222 [2022-11-21 17:29:41,440 INFO L226 Difference]: Without dead ends: 181 [2022-11-21 17:29:41,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3382 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=1558, Invalid=9998, Unknown=0, NotChecked=0, Total=11556 [2022-11-21 17:29:41,443 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 605 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 132 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:41,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 398 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1677 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-21 17:29:41,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-21 17:29:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 94. [2022-11-21 17:29:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.064516129032258) internal successors, (99), 93 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2022-11-21 17:29:41,479 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 69 [2022-11-21 17:29:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:41,480 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2022-11-21 17:29:41,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 37 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:29:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2022-11-21 17:29:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-21 17:29:41,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:41,481 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:41,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:41,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:29:41,683 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash -903520087, now seen corresponding path program 10 times [2022-11-21 17:29:41,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:29:41,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834194387] [2022-11-21 17:29:41,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:29:41,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:29:41,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:29:41,685 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:29:41,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-21 17:29:41,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:29:41,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:41,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 17:29:41,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 18 proven. 111 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:29:50,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 18 proven. 111 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:29:57,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:29:57,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834194387] [2022-11-21 17:29:57,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834194387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:57,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:29:57,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2022-11-21 17:29:57,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263147912] [2022-11-21 17:29:57,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:29:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:29:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:29:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:29:57,723 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 32 states, 32 states have (on average 4.0) internal successors, (128), 32 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:05,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:05,179 INFO L93 Difference]: Finished difference Result 152 states and 160 transitions. [2022-11-21 17:30:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-21 17:30:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0) internal successors, (128), 32 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-21 17:30:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:05,183 INFO L225 Difference]: With dead ends: 152 [2022-11-21 17:30:05,184 INFO L226 Difference]: Without dead ends: 90 [2022-11-21 17:30:05,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 17:30:05,185 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 324 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:05,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 306 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-21 17:30:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-21 17:30:05,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2022-11-21 17:30:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2022-11-21 17:30:05,201 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 75 [2022-11-21 17:30:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:05,201 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2022-11-21 17:30:05,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.0) internal successors, (128), 32 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2022-11-21 17:30:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 17:30:05,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:05,202 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:05,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:30:05,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:30:05,403 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:30:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:05,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2118097373, now seen corresponding path program 11 times [2022-11-21 17:30:05,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:30:05,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332398812] [2022-11-21 17:30:05,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:30:05,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:30:05,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:30:05,405 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:30:05,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-21 17:30:05,636 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-21 17:30:05,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:30:05,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-21 17:30:05,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:30:05,877 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 16 treesize of output 12 [2022-11-21 17:30:05,929 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 [2022-11-21 17:30:06,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:06,041 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 26 treesize of output 25 [2022-11-21 17:30:06,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:06,059 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 26 treesize of output 25 [2022-11-21 17:30:06,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:06,125 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 26 treesize of output 25 [2022-11-21 17:30:06,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:06,143 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 26 treesize of output 25 [2022-11-21 17:30:06,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:06,216 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 26 treesize of output 25 [2022-11-21 17:30:06,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:30:06,236 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 26 treesize of output 25 [2022-11-21 17:30:06,305 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 29 treesize of output 28 [2022-11-21 17:30:06,325 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 29 treesize of output 13 [2022-11-21 17:30:07,634 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:30:07,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2022-11-21 17:30:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:07,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:30:15,995 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 17 treesize of output 15 [2022-11-21 17:30:16,005 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 [2022-11-21 17:30:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 20 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:30:16,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:30:16,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332398812] [2022-11-21 17:30:16,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332398812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:30:16,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:30:16,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 31] total 51 [2022-11-21 17:30:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441931085] [2022-11-21 17:30:16,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:30:16,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-21 17:30:16,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:30:16,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-21 17:30:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=2184, Unknown=0, NotChecked=0, Total=2550 [2022-11-21 17:30:16,596 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand has 51 states, 51 states have (on average 3.1372549019607843) internal successors, (160), 51 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:20,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:30:22,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:30:27,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:30:31,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:30:34,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:30:36,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:30:36,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:36,805 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2022-11-21 17:30:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 17:30:36,805 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.1372549019607843) internal successors, (160), 51 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-11-21 17:30:36,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:36,806 INFO L225 Difference]: With dead ends: 187 [2022-11-21 17:30:36,806 INFO L226 Difference]: Without dead ends: 177 [2022-11-21 17:30:36,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2206 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1182, Invalid=6474, Unknown=0, NotChecked=0, Total=7656 [2022-11-21 17:30:36,810 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 663 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 230 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:36,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 392 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1557 Invalid, 6 Unknown, 0 Unchecked, 16.3s Time] [2022-11-21 17:30:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-21 17:30:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 90. [2022-11-21 17:30:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 89 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2022-11-21 17:30:36,829 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 83 [2022-11-21 17:30:36,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:36,830 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2022-11-21 17:30:36,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.1372549019607843) internal successors, (160), 51 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2022-11-21 17:30:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:30:36,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:36,831 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:36,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:30:37,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:30:37,038 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:30:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1794183984, now seen corresponding path program 12 times [2022-11-21 17:30:37,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:30:37,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225593072] [2022-11-21 17:30:37,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:30:37,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:30:37,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:30:37,041 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:30:37,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-21 17:30:37,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-11-21 17:30:37,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:30:37,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 17:30:37,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:30:37,448 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 16 treesize of output 12 [2022-11-21 17:30:37,481 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 [2022-11-21 17:30:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 17:30:38,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:30:38,881 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 17 treesize of output 15 [2022-11-21 17:30:38,883 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 20 treesize of output 16 [2022-11-21 17:30:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 17:30:39,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:30:39,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225593072] [2022-11-21 17:30:39,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225593072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:30:39,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:30:39,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2022-11-21 17:30:39,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665523315] [2022-11-21 17:30:39,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:30:39,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:30:39,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:30:39,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:30:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:30:39,104 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:44,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:30:46,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:30:48,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 17:30:50,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:30:50,640 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2022-11-21 17:30:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-21 17:30:50,641 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-21 17:30:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:30:50,642 INFO L225 Difference]: With dead ends: 179 [2022-11-21 17:30:50,642 INFO L226 Difference]: Without dead ends: 177 [2022-11-21 17:30:50,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2421 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=890, Invalid=7666, Unknown=0, NotChecked=0, Total=8556 [2022-11-21 17:30:50,644 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 475 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 104 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:30:50,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 439 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1748 Invalid, 3 Unknown, 0 Unchecked, 8.7s Time] [2022-11-21 17:30:50,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-21 17:30:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 96. [2022-11-21 17:30:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.063157894736842) internal successors, (101), 95 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2022-11-21 17:30:50,676 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 89 [2022-11-21 17:30:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:30:50,676 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2022-11-21 17:30:50,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.71875) internal successors, (151), 32 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:30:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2022-11-21 17:30:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-21 17:30:50,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:30:50,678 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:30:50,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-21 17:30:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:30:50,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:30:50,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:30:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash 170065283, now seen corresponding path program 13 times [2022-11-21 17:30:50,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:30:50,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438180939] [2022-11-21 17:30:50,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:30:50,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:30:50,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:30:50,894 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:30:50,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-21 17:30:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:51,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:30:51,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 24 proven. 204 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 17:31:01,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:11,345 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 24 proven. 204 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 17:31:11,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:31:11,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438180939] [2022-11-21 17:31:11,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438180939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:11,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:31:11,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2022-11-21 17:31:11,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94147721] [2022-11-21 17:31:11,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:11,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-21 17:31:11,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:31:11,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-21 17:31:11,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=1024, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 17:31:11,348 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:23,608 INFO L93 Difference]: Finished difference Result 237 states and 251 transitions. [2022-11-21 17:31:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 17:31:23,614 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-21 17:31:23,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:23,614 INFO L225 Difference]: With dead ends: 237 [2022-11-21 17:31:23,615 INFO L226 Difference]: Without dead ends: 110 [2022-11-21 17:31:23,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=450, Invalid=1356, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 17:31:23,618 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 443 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:23,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 499 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-21 17:31:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-21 17:31:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2022-11-21 17:31:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.058252427184466) internal successors, (109), 103 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:23,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2022-11-21 17:31:23,656 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 95 [2022-11-21 17:31:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:23,656 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2022-11-21 17:31:23,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2022-11-21 17:31:23,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 17:31:23,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:23,658 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:23,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-21 17:31:23,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:23,870 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash -100244553, now seen corresponding path program 14 times [2022-11-21 17:31:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:31:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547415050] [2022-11-21 17:31:23,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:31:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:23,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:31:23,871 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:31:23,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-21 17:31:24,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:31:24,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:31:24,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 17:31:24,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:24,338 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 16 treesize of output 12 [2022-11-21 17:31:24,379 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 29 treesize of output 28 [2022-11-21 17:31:24,450 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 29 treesize of output 28 [2022-11-21 17:31:24,470 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 29 treesize of output 28 [2022-11-21 17:31:24,538 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 29 treesize of output 28 [2022-11-21 17:31:24,566 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 [2022-11-21 17:31:25,128 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 29 treesize of output 17 [2022-11-21 17:31:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 106 proven. 145 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-21 17:31:25,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:29,138 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 34 treesize of output 32 [2022-11-21 17:31:29,142 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 1170 treesize of output 1138 [2022-11-21 17:31:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 106 proven. 115 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-21 17:31:29,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 17:31:29,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547415050] [2022-11-21 17:31:29,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547415050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:29,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:31:29,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 29 [2022-11-21 17:31:29,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145774459] [2022-11-21 17:31:29,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-21 17:31:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 17:31:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-21 17:31:29,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2022-11-21 17:31:29,560 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:33,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:31:35,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-21 17:31:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:36,357 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2022-11-21 17:31:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:31:36,358 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-21 17:31:36,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:36,358 INFO L225 Difference]: With dead ends: 158 [2022-11-21 17:31:36,358 INFO L226 Difference]: Without dead ends: 136 [2022-11-21 17:31:36,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 173 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=290, Invalid=1350, Unknown=0, NotChecked=0, Total=1640 [2022-11-21 17:31:36,359 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 436 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 108 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:36,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 300 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 639 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 17:31:36,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-21 17:31:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2022-11-21 17:31:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2022-11-21 17:31:36,383 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 103 [2022-11-21 17:31:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:36,383 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2022-11-21 17:31:36,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:31:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2022-11-21 17:31:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 17:31:36,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:36,385 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:36,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-21 17:31:36,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:36,599 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:31:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:31:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash 118610165, now seen corresponding path program 15 times [2022-11-21 17:31:36,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 17:31:36,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010432467] [2022-11-21 17:31:36,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:31:36,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 17:31:36,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 17:31:36,602 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-21 17:31:36,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a678a82-b477-41b2-8e5c-1b219cc0ea8e/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-21 17:31:36,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-21 17:31:36,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:31:36,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-21 17:31:36,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:31:37,045 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 16 treesize of output 12 [2022-11-21 17:31:37,105 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 29 treesize of output 28 [2022-11-21 17:31:37,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,183 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 24 treesize of output 23 [2022-11-21 17:31:37,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,207 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 24 treesize of output 23 [2022-11-21 17:31:37,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,297 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 24 treesize of output 23 [2022-11-21 17:31:37,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,318 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 24 treesize of output 23 [2022-11-21 17:31:37,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,399 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 24 treesize of output 23 [2022-11-21 17:31:37,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,426 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 24 treesize of output 23 [2022-11-21 17:31:37,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,536 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 24 treesize of output 23 [2022-11-21 17:31:37,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,604 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:37,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-21 17:31:37,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,749 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:37,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-11-21 17:31:37,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 17:31:37,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:37,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2022-11-21 17:31:37,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:37,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-11-21 17:31:37,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:37,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:37,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-11-21 17:31:38,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,028 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:38,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-11-21 17:31:38,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,057 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:38,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-11-21 17:31:38,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:38,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-11-21 17:31:38,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:38,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2022-11-21 17:31:38,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:38,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-11-21 17:31:38,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 17:31:38,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:38,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2022-11-21 17:31:39,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:31:39,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 20 [2022-11-21 17:31:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 16 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:31:39,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:32:49,067 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 112 treesize of output 108 [2022-11-21 17:32:49,245 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 17:32:49,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12443088 treesize of output 12418512 [2022-11-21 17:33:34,588 WARN L233 SmtUtils]: Spent 45.33s on a formula simplification that was a NOOP. DAG size: 3730 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:37:29,263 WARN L233 SmtUtils]: Spent 40.72s on a formula simplification. DAG size of input: 1760 DAG size of output: 1760 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:37:53,418 WARN L233 SmtUtils]: Spent 18.10s on a formula simplification. DAG size of input: 647 DAG size of output: 647 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:38:14,142 WARN L233 SmtUtils]: Spent 17.13s on a formula simplification. DAG size of input: 643 DAG size of output: 642 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:38:33,204 WARN L233 SmtUtils]: Spent 18.01s on a formula simplification. DAG size of input: 641 DAG size of output: 640 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:38:51,071 WARN L233 SmtUtils]: Spent 16.85s on a formula simplification. DAG size of input: 639 DAG size of output: 639 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:38:57,184 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 639 DAG size of output: 639 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:39:20,443 WARN L233 SmtUtils]: Spent 14.63s on a formula simplification. DAG size of input: 619 DAG size of output: 618 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:41:27,289 WARN L233 SmtUtils]: Spent 17.94s on a formula simplification. DAG size of input: 612 DAG size of output: 609 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-21 17:41:44,842 WARN L233 SmtUtils]: Spent 17.55s on a formula simplification. DAG size of input: 610 DAG size of output: 607 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)