./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 --- 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-5e519f3 [2022-11-02 20:34:00,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:34:00,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:34:00,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:34:00,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:34:00,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:34:00,717 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:34:00,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:34:00,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:34:00,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:34:00,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:34:00,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:34:00,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:34:00,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:34:00,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:34:00,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:34:00,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:34:00,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:34:00,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:34:00,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:34:00,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:34:00,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:34:00,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:34:00,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:34:00,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:34:00,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:34:00,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:34:00,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:34:00,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:34:00,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:34:00,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:34:00,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:34:00,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:34:00,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:34:00,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:34:00,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:34:00,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:34:00,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:34:00,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:34:00,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:34:00,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:34:00,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:34:00,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:34:00,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:34:00,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:34:00,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:34:00,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:34:00,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:34:00,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:34:00,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:34:00,857 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:34:00,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:34:00,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:34:00,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:34:00,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:34:00,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:34:00,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:34:00,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:34:00,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:34:00,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:34:00,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:34:00,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:34:00,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:34:00,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:00,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:34:00,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:34:00,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:34:00,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:34:00,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:34:00,863 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:34:00,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:34:00,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:34:00,866 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_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 [2022-11-02 20:34:01,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:34:01,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:34:01,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:34:01,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:34:01,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:34:01,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-11-02 20:34:01,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/5e17e4234/85a72eb877c3403ea3220b78f2973f28/FLAG3599c0aa7 [2022-11-02 20:34:02,087 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:34:02,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-11-02 20:34:02,098 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/5e17e4234/85a72eb877c3403ea3220b78f2973f28/FLAG3599c0aa7 [2022-11-02 20:34:02,370 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/5e17e4234/85a72eb877c3403ea3220b78f2973f28 [2022-11-02 20:34:02,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:34:02,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:34:02,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:02,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:34:02,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:34:02,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:02,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d926c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02, skipping insertion in model container [2022-11-02 20:34:02,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:02,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:34:02,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:34:02,690 WARN L230 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_9c367400-0ed2-47bc-9784-dfb27c58b26b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-11-02 20:34:02,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:02,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:34:02,811 WARN L230 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_9c367400-0ed2-47bc-9784-dfb27c58b26b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-11-02 20:34:02,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:02,891 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:34:02,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02 WrapperNode [2022-11-02 20:34:02,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:02,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:02,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:34:02,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:34:02,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:02,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,013 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 350 [2022-11-02 20:34:03,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:03,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:34:03,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:34:03,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:34:03,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:34:03,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:34:03,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:34:03,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:34:03,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (1/1) ... [2022-11-02 20:34:03,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:03,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:03,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:34:03,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:34:03,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:34:03,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:34:03,403 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:34:03,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:34:04,355 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:34:04,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:34:04,383 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:34:04,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:04 BoogieIcfgContainer [2022-11-02 20:34:04,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:34:04,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:34:04,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:34:04,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:34:04,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:34:02" (1/3) ... [2022-11-02 20:34:04,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3f2a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:04, skipping insertion in model container [2022-11-02 20:34:04,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:02" (2/3) ... [2022-11-02 20:34:04,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3f2a36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:04, skipping insertion in model container [2022-11-02 20:34:04,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:04" (3/3) ... [2022-11-02 20:34:04,400 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b02.c [2022-11-02 20:34:04,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:34:04,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:34:04,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:34:04,527 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;@8121199, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:34:04,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:34:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.489795918367347) internal successors, (73), 50 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) [2022-11-02 20:34:04,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:34:04,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:04,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:34:04,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:04,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:34:04,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:04,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015340712] [2022-11-02 20:34:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:34:04,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:34:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:34:05,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:34:05,217 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:34:05,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:34:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:34:05,227 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:34:05,232 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:34:05,265 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:34:05,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:34:05 BoogieIcfgContainer [2022-11-02 20:34:05,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:34:05,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:34:05,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:34:05,285 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:34:05,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:04" (3/4) ... [2022-11-02 20:34:05,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:34:05,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:34:05,292 INFO L158 Benchmark]: Toolchain (without parser) took 2916.35ms. Allocated memory is still 121.6MB. Free memory was 83.2MB in the beginning and 53.7MB in the end (delta: 29.4MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2022-11-02 20:34:05,294 INFO L158 Benchmark]: CDTParser took 0.72ms. Allocated memory is still 121.6MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:34:05,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.30ms. Allocated memory is still 121.6MB. Free memory was 83.0MB in the beginning and 91.0MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:34:05,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 120.78ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 85.9MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:34:05,297 INFO L158 Benchmark]: Boogie Preprocessor took 96.97ms. Allocated memory is still 121.6MB. Free memory was 85.9MB in the beginning and 83.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:34:05,304 INFO L158 Benchmark]: RCFGBuilder took 1273.57ms. Allocated memory is still 121.6MB. Free memory was 83.1MB in the beginning and 87.8MB in the end (delta: -4.7MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2022-11-02 20:34:05,305 INFO L158 Benchmark]: TraceAbstraction took 894.10ms. Allocated memory is still 121.6MB. Free memory was 87.3MB in the beginning and 54.3MB in the end (delta: 33.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-02 20:34:05,307 INFO L158 Benchmark]: Witness Printer took 6.22ms. Allocated memory is still 121.6MB. Free memory was 54.3MB in the beginning and 53.7MB in the end (delta: 542.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:34:05,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72ms. Allocated memory is still 121.6MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.30ms. Allocated memory is still 121.6MB. Free memory was 83.0MB in the beginning and 91.0MB in the end (delta: -8.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 120.78ms. Allocated memory is still 121.6MB. Free memory was 91.0MB in the beginning and 85.9MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.97ms. Allocated memory is still 121.6MB. Free memory was 85.9MB in the beginning and 83.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1273.57ms. Allocated memory is still 121.6MB. Free memory was 83.1MB in the beginning and 87.8MB in the end (delta: -4.7MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * TraceAbstraction took 894.10ms. Allocated memory is still 121.6MB. Free memory was 87.3MB in the beginning and 54.3MB in the end (delta: 33.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 6.22ms. Allocated memory is still 121.6MB. Free memory was 54.3MB in the beginning and 53.7MB in the end (delta: 542.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 78, overapproximation of bitwiseOr at line 87, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L29] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L31] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 3); [L32] const SORT_12 msb_SORT_12 = (SORT_12)1 << (3 - 1); [L34] const SORT_47 mask_SORT_47 = (SORT_47)-1 >> (sizeof(SORT_47) * 8 - 2); [L35] const SORT_47 msb_SORT_47 = (SORT_47)1 << (2 - 1); [L37] const SORT_1 var_4 = 0; [L38] const SORT_7 var_9 = 1; [L39] const SORT_12 var_13 = 0; [L40] const SORT_1 var_21 = 1; [L41] const SORT_12 var_28 = 2; [L42] const SORT_12 var_31 = 1; [L43] const SORT_12 var_35 = 4; [L44] const SORT_12 var_38 = 6; [L45] const SORT_12 var_41 = 5; [L46] const SORT_12 var_45 = 3; [L47] const SORT_7 var_57 = 0; [L49] SORT_1 input_2; [L50] SORT_1 input_3; [L51] SORT_12 input_55; [L52] SORT_12 input_62; [L53] SORT_12 input_75; [L55] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L56] SORT_12 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_12; [L58] SORT_1 init_6_arg_1 = var_4; [L59] state_5 = init_6_arg_1 [L60] SORT_12 init_15_arg_1 = var_13; [L61] state_14 = init_15_arg_1 VAL [init_15_arg_1=0, init_6_arg_1=0, mask_SORT_1=1, mask_SORT_12=7, mask_SORT_47=3, mask_SORT_7=4294967295, msb_SORT_1=1, msb_SORT_12=4, msb_SORT_47=2, msb_SORT_7=2147483648, state_14=0, state_5=0, var_13=0, var_21=1, var_28=2, var_31=1, var_35=4, var_38=6, var_4=0, var_41=5, var_45=3, var_57=0, var_9=1] [L64] input_2 = __VERIFIER_nondet_uchar() [L65] input_3 = __VERIFIER_nondet_uchar() [L66] input_55 = __VERIFIER_nondet_uchar() [L67] input_62 = __VERIFIER_nondet_uchar() [L68] input_75 = __VERIFIER_nondet_uchar() [L71] SORT_1 var_8_arg_0 = state_5; [L72] var_8_arg_0 = var_8_arg_0 & mask_SORT_1 [L73] SORT_7 var_8 = var_8_arg_0; [L74] SORT_7 var_10_arg_0 = var_8; [L75] SORT_7 var_10_arg_1 = var_9; [L76] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L77] SORT_1 var_11_arg_0 = var_10; [L78] SORT_1 var_11 = ~var_11_arg_0; [L79] SORT_12 var_16_arg_0 = state_14; [L80] var_16_arg_0 = var_16_arg_0 & mask_SORT_12 [L81] SORT_7 var_16 = var_16_arg_0; [L82] SORT_7 var_17_arg_0 = var_16; [L83] SORT_7 var_17_arg_1 = var_9; [L84] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L85] SORT_1 var_18_arg_0 = var_11; [L86] SORT_1 var_18_arg_1 = var_17; [L87] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L88] SORT_1 var_22_arg_0 = var_18; [L89] SORT_1 var_22 = ~var_22_arg_0; [L90] SORT_1 var_23_arg_0 = var_21; [L91] SORT_1 var_23_arg_1 = var_22; [L92] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L93] var_23 = var_23 & mask_SORT_1 [L94] SORT_1 bad_24_arg_0 = var_23; [L95] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 20:34:05,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/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_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc --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 64bit --witnessprinter.graph.data.programhash b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 --- 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-5e519f3 [2022-11-02 20:34:08,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:34:08,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:34:08,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:34:08,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:34:08,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:34:08,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:34:08,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:34:08,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:34:08,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:34:08,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:34:08,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:34:08,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:34:08,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:34:08,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:34:08,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:34:08,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:34:08,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:34:08,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:34:08,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:34:08,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:34:08,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:34:08,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:34:08,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:34:08,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:34:08,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:34:08,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:34:08,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:34:08,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:34:08,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:34:08,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:34:08,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:34:08,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:34:08,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:34:08,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:34:08,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:34:08,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:34:08,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:34:08,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:34:08,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:34:08,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:34:08,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:34:08,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:34:08,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:34:08,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:34:08,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:34:08,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:34:08,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:34:08,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:34:08,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:34:08,342 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:34:08,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:34:08,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:34:08,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:34:08,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:34:08,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:34:08,343 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:34:08,344 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:34:08,344 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:34:08,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:34:08,345 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:34:08,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:34:08,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:34:08,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:34:08,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:34:08,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:08,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:34:08,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:34:08,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:34:08,347 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:34:08,347 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:34:08,348 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:34:08,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:34:08,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:34:08,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:34:08,349 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_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85d52a1932fa85f97c362ca60a681b550e6be8c5a2b0a8b0363e5b8a5a0a447 [2022-11-02 20:34:08,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:34:08,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:34:08,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:34:08,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:34:08,933 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:34:08,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-11-02 20:34:09,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/ddcccb230/ae66774a078f46bf8111258e3f3049a7/FLAG2920933c1 [2022-11-02 20:34:09,651 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:34:09,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2022-11-02 20:34:09,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/ddcccb230/ae66774a078f46bf8111258e3f3049a7/FLAG2920933c1 [2022-11-02 20:34:09,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/data/ddcccb230/ae66774a078f46bf8111258e3f3049a7 [2022-11-02 20:34:09,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:34:09,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:34:09,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:09,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:34:10,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:34:10,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:09" (1/1) ... [2022-11-02 20:34:10,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14955f88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10, skipping insertion in model container [2022-11-02 20:34:10,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:09" (1/1) ... [2022-11-02 20:34:10,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:34:10,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:34:10,214 WARN L230 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_9c367400-0ed2-47bc-9784-dfb27c58b26b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-11-02 20:34:10,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:10,349 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:34:10,404 WARN L230 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_9c367400-0ed2-47bc-9784-dfb27c58b26b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1107,1120] [2022-11-02 20:34:10,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:10,515 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:34:10,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10 WrapperNode [2022-11-02 20:34:10,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:10,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:10,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:34:10,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:34:10,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,608 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 350 [2022-11-02 20:34:10,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:10,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:34:10,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:34:10,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:34:10,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,696 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:34:10,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:34:10,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:34:10,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:34:10,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (1/1) ... [2022-11-02 20:34:10,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:10,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:34:10,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:34:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:34:10,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:34:11,067 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:34:11,069 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:34:11,723 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:34:11,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:34:11,734 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:34:11,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:11 BoogieIcfgContainer [2022-11-02 20:34:11,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:34:11,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:34:11,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:34:11,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:34:11,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:34:09" (1/3) ... [2022-11-02 20:34:11,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e34dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:11, skipping insertion in model container [2022-11-02 20:34:11,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:10" (2/3) ... [2022-11-02 20:34:11,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e34dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:11, skipping insertion in model container [2022-11-02 20:34:11,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:11" (3/3) ... [2022-11-02 20:34:11,774 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b02.c [2022-11-02 20:34:11,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:34:11,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:34:11,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:34:11,911 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;@42c43d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:34:11,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:34:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 49 states have (on average 1.489795918367347) internal successors, (73), 50 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) [2022-11-02 20:34:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:34:11,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:11,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:34:11,934 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:34:11,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:11,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717214347] [2022-11-02 20:34:11,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:11,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:11,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:11,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:11,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:34:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:12,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 20:34:12,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:12,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:12,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:12,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:12,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717214347] [2022-11-02 20:34:12,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717214347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:12,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:12,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465728107] [2022-11-02 20:34:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:12,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:12,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:12,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:12,487 INFO L87 Difference]: Start difference. First operand has 51 states, 49 states have (on average 1.489795918367347) internal successors, (73), 50 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:34:12,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:12,684 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2022-11-02 20:34:12,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:12,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-02 20:34:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:12,712 INFO L225 Difference]: With dead ends: 140 [2022-11-02 20:34:12,718 INFO L226 Difference]: Without dead ends: 91 [2022-11-02 20:34:12,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:12,728 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 124 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:12,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 182 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-02 20:34:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 49. [2022-11-02 20:34:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.4375) internal successors, (69), 48 states have internal predecessors, (69), 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) [2022-11-02 20:34:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2022-11-02 20:34:12,789 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 5 [2022-11-02 20:34:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:12,789 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2022-11-02 20:34:12,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-02 20:34:12,789 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2022-11-02 20:34:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:12,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:12,792 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:12,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 20:34:12,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:12,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1221802023, now seen corresponding path program 1 times [2022-11-02 20:34:13,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:13,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326008696] [2022-11-02 20:34:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:13,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:13,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:34:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:13,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:13,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:13,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:13,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:13,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326008696] [2022-11-02 20:34:13,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326008696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:13,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:13,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:13,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357326467] [2022-11-02 20:34:13,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:13,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:13,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:13,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:13,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:13,348 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-11-02 20:34:13,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:13,499 INFO L93 Difference]: Finished difference Result 179 states and 258 transitions. [2022-11-02 20:34:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:13,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) Word has length 48 [2022-11-02 20:34:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:13,502 INFO L225 Difference]: With dead ends: 179 [2022-11-02 20:34:13,502 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 20:34:13,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:13,505 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 180 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:13,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 228 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:13,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 20:34:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 51. [2022-11-02 20:34:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.42) internal successors, (71), 50 states have internal predecessors, (71), 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) [2022-11-02 20:34:13,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2022-11-02 20:34:13,517 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 71 transitions. Word has length 48 [2022-11-02 20:34:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:13,517 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 71 transitions. [2022-11-02 20:34:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-11-02 20:34:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 71 transitions. [2022-11-02 20:34:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:13,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:13,520 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:13,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:13,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:13,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2119195301, now seen corresponding path program 1 times [2022-11-02 20:34:13,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:13,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578175230] [2022-11-02 20:34:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:13,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:13,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:13,741 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:13,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:34:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:14,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:34:14,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:14,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:14,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:14,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578175230] [2022-11-02 20:34:14,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578175230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:14,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:14,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:14,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432237852] [2022-11-02 20:34:14,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:14,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:14,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:14,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:14,203 INFO L87 Difference]: Start difference. First operand 51 states and 71 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:14,391 INFO L93 Difference]: Finished difference Result 184 states and 262 transitions. [2022-11-02 20:34:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:14,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:14,394 INFO L225 Difference]: With dead ends: 184 [2022-11-02 20:34:14,394 INFO L226 Difference]: Without dead ends: 139 [2022-11-02 20:34:14,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:14,396 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 237 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:14,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 344 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-02 20:34:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 55. [2022-11-02 20:34:14,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 54 states have internal predecessors, (76), 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) [2022-11-02 20:34:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 76 transitions. [2022-11-02 20:34:14,408 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 76 transitions. Word has length 48 [2022-11-02 20:34:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:14,409 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 76 transitions. [2022-11-02 20:34:14,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 76 transitions. [2022-11-02 20:34:14,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:14,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:14,411 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:14,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:14,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:14,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:14,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:14,629 INFO L85 PathProgramCache]: Analyzing trace with hash 330404829, now seen corresponding path program 1 times [2022-11-02 20:34:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:14,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828811025] [2022-11-02 20:34:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:14,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:14,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:14,633 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:14,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:34:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:14,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:14,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:15,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:15,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:15,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828811025] [2022-11-02 20:34:15,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828811025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:15,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:15,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:15,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296771908] [2022-11-02 20:34:15,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:15,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:15,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:15,024 INFO L87 Difference]: Start difference. First operand 55 states and 76 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-11-02 20:34:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:15,144 INFO L93 Difference]: Finished difference Result 179 states and 256 transitions. [2022-11-02 20:34:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:15,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) Word has length 48 [2022-11-02 20:34:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:15,146 INFO L225 Difference]: With dead ends: 179 [2022-11-02 20:34:15,146 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 20:34:15,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:15,148 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 163 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:15,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 229 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 20:34:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 57. [2022-11-02 20:34:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 56 states have internal predecessors, (78), 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) [2022-11-02 20:34:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2022-11-02 20:34:15,169 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 48 [2022-11-02 20:34:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:15,170 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2022-11-02 20:34:15,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-11-02 20:34:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2022-11-02 20:34:15,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:15,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:15,177 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:15,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:15,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:15,394 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:15,394 INFO L85 PathProgramCache]: Analyzing trace with hash 989936351, now seen corresponding path program 1 times [2022-11-02 20:34:15,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:15,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510323448] [2022-11-02 20:34:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:15,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:15,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:15,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:34:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:15,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:34:15,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:15,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:15,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:15,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510323448] [2022-11-02 20:34:15,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510323448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:15,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:15,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:15,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255196468] [2022-11-02 20:34:15,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:15,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:15,855 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:16,017 INFO L93 Difference]: Finished difference Result 190 states and 269 transitions. [2022-11-02 20:34:16,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:16,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:16,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:16,019 INFO L225 Difference]: With dead ends: 190 [2022-11-02 20:34:16,020 INFO L226 Difference]: Without dead ends: 145 [2022-11-02 20:34:16,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:16,021 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 229 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:16,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 341 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-02 20:34:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 61. [2022-11-02 20:34:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3833333333333333) internal successors, (83), 60 states have internal predecessors, (83), 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) [2022-11-02 20:34:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-11-02 20:34:16,030 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 48 [2022-11-02 20:34:16,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:16,031 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-11-02 20:34:16,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-11-02 20:34:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:16,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:16,033 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:16,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:16,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:16,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash 917549793, now seen corresponding path program 1 times [2022-11-02 20:34:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:16,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616581112] [2022-11-02 20:34:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:16,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:16,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:16,254 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:16,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:34:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:16,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 20:34:16,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:16,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:16,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616581112] [2022-11-02 20:34:16,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616581112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:16,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:16,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:16,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392427087] [2022-11-02 20:34:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:16,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:16,763 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:16,964 INFO L93 Difference]: Finished difference Result 184 states and 259 transitions. [2022-11-02 20:34:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:16,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:16,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:16,966 INFO L225 Difference]: With dead ends: 184 [2022-11-02 20:34:16,966 INFO L226 Difference]: Without dead ends: 139 [2022-11-02 20:34:16,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:16,967 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 209 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:16,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 325 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-02 20:34:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 63. [2022-11-02 20:34:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 62 states have internal predecessors, (85), 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) [2022-11-02 20:34:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2022-11-02 20:34:16,976 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 48 [2022-11-02 20:34:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:16,976 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2022-11-02 20:34:16,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2022-11-02 20:34:16,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:16,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:16,978 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:17,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:17,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:17,205 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:17,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1619149667, now seen corresponding path program 1 times [2022-11-02 20:34:17,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:17,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383925402] [2022-11-02 20:34:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:17,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:17,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:17,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:17,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:34:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:17,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:17,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:17,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:17,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:17,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383925402] [2022-11-02 20:34:17,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383925402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:17,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:17,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:17,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547569697] [2022-11-02 20:34:17,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:17,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:17,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:17,587 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:17,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:17,726 INFO L93 Difference]: Finished difference Result 198 states and 279 transitions. [2022-11-02 20:34:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:17,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:17,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:17,728 INFO L225 Difference]: With dead ends: 198 [2022-11-02 20:34:17,728 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:34:17,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:17,729 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 220 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:17,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 339 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:34:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 69. [2022-11-02 20:34:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3676470588235294) internal successors, (93), 68 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) [2022-11-02 20:34:17,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2022-11-02 20:34:17,737 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 48 [2022-11-02 20:34:17,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:17,737 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2022-11-02 20:34:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2022-11-02 20:34:17,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:17,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:17,739 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:17,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:17,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:17,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:17,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1759698277, now seen corresponding path program 1 times [2022-11-02 20:34:17,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:17,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108005165] [2022-11-02 20:34:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:17,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:17,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:17,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:34:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:18,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:18,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:18,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:18,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:18,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108005165] [2022-11-02 20:34:18,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108005165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:18,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:18,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:18,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32184721] [2022-11-02 20:34:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:18,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:18,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:18,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:18,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:18,321 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:18,469 INFO L93 Difference]: Finished difference Result 198 states and 278 transitions. [2022-11-02 20:34:18,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:18,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:18,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:18,470 INFO L225 Difference]: With dead ends: 198 [2022-11-02 20:34:18,471 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:34:18,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:18,472 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 213 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:18,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 335 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:18,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:34:18,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 71. [2022-11-02 20:34:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 70 states have internal predecessors, (95), 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) [2022-11-02 20:34:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2022-11-02 20:34:18,483 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 48 [2022-11-02 20:34:18,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:18,484 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2022-11-02 20:34:18,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2022-11-02 20:34:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:18,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:18,491 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:18,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:18,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:18,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:18,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:18,722 INFO L85 PathProgramCache]: Analyzing trace with hash -45740057, now seen corresponding path program 1 times [2022-11-02 20:34:18,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:18,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827168841] [2022-11-02 20:34:18,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:18,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:18,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:18,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:34:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:18,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:34:18,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:19,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:19,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:19,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827168841] [2022-11-02 20:34:19,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827168841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:19,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:19,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844592120] [2022-11-02 20:34:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:19,254 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:19,409 INFO L93 Difference]: Finished difference Result 198 states and 277 transitions. [2022-11-02 20:34:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:19,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:19,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:19,413 INFO L225 Difference]: With dead ends: 198 [2022-11-02 20:34:19,413 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:34:19,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:19,414 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 206 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:19,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 329 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:19,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:34:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 73. [2022-11-02 20:34:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 72 states have internal predecessors, (97), 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) [2022-11-02 20:34:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2022-11-02 20:34:19,438 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 97 transitions. Word has length 48 [2022-11-02 20:34:19,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:19,439 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 97 transitions. [2022-11-02 20:34:19,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 97 transitions. [2022-11-02 20:34:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:19,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:19,440 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:19,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:19,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:19,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:19,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash 376961769, now seen corresponding path program 1 times [2022-11-02 20:34:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:19,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305174319] [2022-11-02 20:34:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:19,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:19,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:19,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:34:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:19,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:19,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:20,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:20,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:20,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305174319] [2022-11-02 20:34:20,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305174319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:20,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:20,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167497711] [2022-11-02 20:34:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:20,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:20,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:20,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:20,068 INFO L87 Difference]: Start difference. First operand 73 states and 97 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:20,206 INFO L93 Difference]: Finished difference Result 208 states and 291 transitions. [2022-11-02 20:34:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:20,208 INFO L225 Difference]: With dead ends: 208 [2022-11-02 20:34:20,208 INFO L226 Difference]: Without dead ends: 163 [2022-11-02 20:34:20,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:20,209 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 212 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:20,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 339 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-02 20:34:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 77. [2022-11-02 20:34:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 76 states have internal predecessors, (102), 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) [2022-11-02 20:34:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2022-11-02 20:34:20,220 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 48 [2022-11-02 20:34:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:20,221 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2022-11-02 20:34:20,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2022-11-02 20:34:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:20,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:20,225 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:20,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:20,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:20,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:20,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1211386133, now seen corresponding path program 1 times [2022-11-02 20:34:20,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:20,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23080331] [2022-11-02 20:34:20,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:20,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:20,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:20,444 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:20,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:34:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:20,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:20,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:20,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:20,866 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:20,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23080331] [2022-11-02 20:34:20,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23080331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:20,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:20,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:20,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444255953] [2022-11-02 20:34:20,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:20,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:20,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:20,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:20,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:20,869 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:21,012 INFO L93 Difference]: Finished difference Result 212 states and 296 transitions. [2022-11-02 20:34:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:21,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:21,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:21,015 INFO L225 Difference]: With dead ends: 212 [2022-11-02 20:34:21,015 INFO L226 Difference]: Without dead ends: 167 [2022-11-02 20:34:21,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:21,016 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 207 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:21,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 333 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-02 20:34:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 81. [2022-11-02 20:34:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 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) [2022-11-02 20:34:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2022-11-02 20:34:21,027 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 48 [2022-11-02 20:34:21,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:21,027 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2022-11-02 20:34:21,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2022-11-02 20:34:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:21,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:21,037 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:21,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:21,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1798192147, now seen corresponding path program 1 times [2022-11-02 20:34:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:21,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754412101] [2022-11-02 20:34:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:21,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:21,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:21,256 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:21,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:34:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:21,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:34:21,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:21,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:21,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:21,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754412101] [2022-11-02 20:34:21,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754412101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:21,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:21,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:21,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267203403] [2022-11-02 20:34:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:21,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:21,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:21,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:21,659 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:21,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:21,793 INFO L93 Difference]: Finished difference Result 208 states and 289 transitions. [2022-11-02 20:34:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:21,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:21,795 INFO L225 Difference]: With dead ends: 208 [2022-11-02 20:34:21,796 INFO L226 Difference]: Without dead ends: 163 [2022-11-02 20:34:21,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:21,797 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 193 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:21,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 328 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-02 20:34:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 83. [2022-11-02 20:34:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.329268292682927) internal successors, (109), 82 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) [2022-11-02 20:34:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2022-11-02 20:34:21,809 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 48 [2022-11-02 20:34:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:21,809 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2022-11-02 20:34:21,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2022-11-02 20:34:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:21,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:21,811 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:21,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:22,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:22,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:22,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1097127569, now seen corresponding path program 1 times [2022-11-02 20:34:22,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:22,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193166918] [2022-11-02 20:34:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:22,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:22,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:22,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:22,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:34:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:22,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:34:22,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:22,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:22,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:22,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193166918] [2022-11-02 20:34:22,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193166918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:22,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:22,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:34:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131522295] [2022-11-02 20:34:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:34:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:34:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:34:22,460 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-11-02 20:34:22,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:22,558 INFO L93 Difference]: Finished difference Result 174 states and 240 transitions. [2022-11-02 20:34:22,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:34:22,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) Word has length 48 [2022-11-02 20:34:22,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:22,559 INFO L225 Difference]: With dead ends: 174 [2022-11-02 20:34:22,560 INFO L226 Difference]: Without dead ends: 129 [2022-11-02 20:34:22,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:22,561 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 77 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:22,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 214 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-02 20:34:22,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 85. [2022-11-02 20:34:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 84 states have internal predecessors, (111), 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) [2022-11-02 20:34:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 111 transitions. [2022-11-02 20:34:22,567 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 111 transitions. Word has length 48 [2022-11-02 20:34:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:22,567 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 111 transitions. [2022-11-02 20:34:22,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 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) [2022-11-02 20:34:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 111 transitions. [2022-11-02 20:34:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:22,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:22,568 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:22,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:22,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:22,785 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:22,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1777185939, now seen corresponding path program 1 times [2022-11-02 20:34:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:22,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790391974] [2022-11-02 20:34:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:22,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:22,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:22,788 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:22,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:34:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:22,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:34:22,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:23,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:23,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:23,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790391974] [2022-11-02 20:34:23,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790391974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:23,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:23,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:23,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392733462] [2022-11-02 20:34:23,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:23,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:23,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:23,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:23,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:23,426 INFO L87 Difference]: Start difference. First operand 85 states and 111 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:23,590 INFO L93 Difference]: Finished difference Result 208 states and 287 transitions. [2022-11-02 20:34:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:23,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:23,592 INFO L225 Difference]: With dead ends: 208 [2022-11-02 20:34:23,592 INFO L226 Difference]: Without dead ends: 163 [2022-11-02 20:34:23,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:23,593 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 179 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:23,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 316 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-02 20:34:23,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 87. [2022-11-02 20:34:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.313953488372093) internal successors, (113), 86 states have internal predecessors, (113), 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) [2022-11-02 20:34:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 113 transitions. [2022-11-02 20:34:23,600 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 113 transitions. Word has length 48 [2022-11-02 20:34:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:23,600 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 113 transitions. [2022-11-02 20:34:23,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:23,601 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 113 transitions. [2022-11-02 20:34:23,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:23,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:23,602 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:23,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:23,820 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2178577, now seen corresponding path program 1 times [2022-11-02 20:34:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:23,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306669259] [2022-11-02 20:34:23,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:23,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:23,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:23,824 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:23,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:34:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:23,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 20:34:24,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:24,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:34:24,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:24,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306669259] [2022-11-02 20:34:24,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306669259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:24,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:24,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:34:24,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487670176] [2022-11-02 20:34:24,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:24,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:34:24,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:24,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:34:24,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:34:24,571 INFO L87 Difference]: Start difference. First operand 87 states and 113 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:24,761 INFO L93 Difference]: Finished difference Result 198 states and 271 transitions. [2022-11-02 20:34:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:34:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) Word has length 48 [2022-11-02 20:34:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:24,763 INFO L225 Difference]: With dead ends: 198 [2022-11-02 20:34:24,763 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:34:24,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:34:24,764 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 152 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:24,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 295 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:34:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:34:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 89. [2022-11-02 20:34:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 88 states have internal predecessors, (115), 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) [2022-11-02 20:34:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 115 transitions. [2022-11-02 20:34:24,770 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 115 transitions. Word has length 48 [2022-11-02 20:34:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:24,770 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 115 transitions. [2022-11-02 20:34:24,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2022-11-02 20:34:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 115 transitions. [2022-11-02 20:34:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-02 20:34:24,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:24,771 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:24,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:24,972 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:24,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash -331535, now seen corresponding path program 1 times [2022-11-02 20:34:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:24,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780852684] [2022-11-02 20:34:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:24,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:24,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:24,974 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:24,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:34:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:25,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 20:34:25,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:25,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:27,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:27,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780852684] [2022-11-02 20:34:27,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780852684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:27,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:27,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 20:34:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879214731] [2022-11-02 20:34:27,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:27,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:34:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:34:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:27,699 INFO L87 Difference]: Start difference. First operand 89 states and 115 transitions. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 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) [2022-11-02 20:34:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:28,506 INFO L93 Difference]: Finished difference Result 136 states and 182 transitions. [2022-11-02 20:34:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:34:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 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) Word has length 48 [2022-11-02 20:34:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:28,508 INFO L225 Difference]: With dead ends: 136 [2022-11-02 20:34:28,508 INFO L226 Difference]: Without dead ends: 134 [2022-11-02 20:34:28,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:34:28,509 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 361 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:28,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 969 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 126 Invalid, 0 Unknown, 208 Unchecked, 0.3s Time] [2022-11-02 20:34:28,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-02 20:34:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2022-11-02 20:34:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.2967032967032968) internal successors, (118), 91 states have internal predecessors, (118), 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) [2022-11-02 20:34:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 118 transitions. [2022-11-02 20:34:28,516 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 118 transitions. Word has length 48 [2022-11-02 20:34:28,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:28,517 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 118 transitions. [2022-11-02 20:34:28,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 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) [2022-11-02 20:34:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 118 transitions. [2022-11-02 20:34:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:28,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:28,519 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:28,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:28,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:28,737 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:28,738 INFO L85 PathProgramCache]: Analyzing trace with hash -216166799, now seen corresponding path program 1 times [2022-11-02 20:34:28,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:28,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171421871] [2022-11-02 20:34:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:28,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:28,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:28,740 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:28,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:34:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:29,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:34:29,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:29,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:30,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:30,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171421871] [2022-11-02 20:34:30,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171421871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:30,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:30,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-02 20:34:30,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791676218] [2022-11-02 20:34:30,041 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:30,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:34:30,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:34:30,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:30,043 INFO L87 Difference]: Start difference. First operand 92 states and 118 transitions. Second operand has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 states have internal predecessors, (138), 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) [2022-11-02 20:34:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:31,022 INFO L93 Difference]: Finished difference Result 283 states and 377 transitions. [2022-11-02 20:34:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:34:31,023 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 states have internal predecessors, (138), 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 91 [2022-11-02 20:34:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:31,026 INFO L225 Difference]: With dead ends: 283 [2022-11-02 20:34:31,026 INFO L226 Difference]: Without dead ends: 238 [2022-11-02 20:34:31,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=400, Invalid=1406, Unknown=0, NotChecked=0, Total=1806 [2022-11-02 20:34:31,029 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 324 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:31,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 867 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 116 Invalid, 0 Unknown, 161 Unchecked, 0.2s Time] [2022-11-02 20:34:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-02 20:34:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 101. [2022-11-02 20:34:31,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.3) internal successors, (130), 100 states have internal predecessors, (130), 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) [2022-11-02 20:34:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 130 transitions. [2022-11-02 20:34:31,041 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 130 transitions. Word has length 91 [2022-11-02 20:34:31,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:31,041 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 130 transitions. [2022-11-02 20:34:31,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.2631578947368425) internal successors, (138), 19 states have internal predecessors, (138), 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) [2022-11-02 20:34:31,042 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 130 transitions. [2022-11-02 20:34:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:31,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:31,043 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:31,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:31,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:31,259 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:31,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1113560077, now seen corresponding path program 1 times [2022-11-02 20:34:31,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:31,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103406581] [2022-11-02 20:34:31,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:31,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:31,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:31,262 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:31,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:34:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:31,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:34:31,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:32,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:33,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:33,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103406581] [2022-11-02 20:34:33,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103406581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:33,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:33,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:34:33,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537123374] [2022-11-02 20:34:33,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:33,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:34:33,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:33,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:34:33,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:33,845 INFO L87 Difference]: Start difference. First operand 101 states and 130 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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) [2022-11-02 20:34:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:35,677 INFO L93 Difference]: Finished difference Result 493 states and 683 transitions. [2022-11-02 20:34:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:34:35,678 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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 91 [2022-11-02 20:34:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:35,680 INFO L225 Difference]: With dead ends: 493 [2022-11-02 20:34:35,680 INFO L226 Difference]: Without dead ends: 439 [2022-11-02 20:34:35,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=455, Invalid=1801, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 20:34:35,682 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 595 mSDsluCounter, 3301 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 372 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:35,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 3648 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 366 Invalid, 0 Unknown, 372 Unchecked, 0.6s Time] [2022-11-02 20:34:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-02 20:34:35,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 105. [2022-11-02 20:34:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 104 states have internal predecessors, (135), 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) [2022-11-02 20:34:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2022-11-02 20:34:35,692 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 91 [2022-11-02 20:34:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:35,693 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2022-11-02 20:34:35,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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) [2022-11-02 20:34:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2022-11-02 20:34:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:35,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:35,694 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:35,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:35,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:35,909 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1336040053, now seen corresponding path program 1 times [2022-11-02 20:34:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141196580] [2022-11-02 20:34:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:35,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:35,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:35,912 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:35,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:34:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:36,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:34:36,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:36,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:37,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:37,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141196580] [2022-11-02 20:34:37,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141196580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:37,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:37,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-02 20:34:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199492090] [2022-11-02 20:34:37,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:37,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:34:37,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:34:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:37,149 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 19 states have internal predecessors, (144), 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) [2022-11-02 20:34:37,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:37,640 INFO L93 Difference]: Finished difference Result 211 states and 285 transitions. [2022-11-02 20:34:37,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:34:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 19 states have internal predecessors, (144), 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 91 [2022-11-02 20:34:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:37,643 INFO L225 Difference]: With dead ends: 211 [2022-11-02 20:34:37,643 INFO L226 Difference]: Without dead ends: 153 [2022-11-02 20:34:37,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:34:37,645 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 148 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:37,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1013 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 133 Invalid, 0 Unknown, 157 Unchecked, 0.2s Time] [2022-11-02 20:34:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-02 20:34:37,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 113. [2022-11-02 20:34:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.2857142857142858) internal successors, (144), 112 states have internal predecessors, (144), 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) [2022-11-02 20:34:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 144 transitions. [2022-11-02 20:34:37,672 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 144 transitions. Word has length 91 [2022-11-02 20:34:37,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:37,673 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 144 transitions. [2022-11-02 20:34:37,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 19 states have internal predecessors, (144), 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) [2022-11-02 20:34:37,673 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 144 transitions. [2022-11-02 20:34:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:37,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:37,678 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:37,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 20:34:37,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:37,897 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:37,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1995571575, now seen corresponding path program 1 times [2022-11-02 20:34:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:37,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663964993] [2022-11-02 20:34:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:37,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:37,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:37,900 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:37,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:34:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:38,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 20:34:38,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:38,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:39,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:39,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663964993] [2022-11-02 20:34:39,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663964993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:39,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:39,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-02 20:34:39,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801951272] [2022-11-02 20:34:39,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:39,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:34:39,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:34:39,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:34:39,134 INFO L87 Difference]: Start difference. First operand 113 states and 144 transitions. Second operand has 19 states, 19 states have (on average 7.684210526315789) internal successors, (146), 19 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) [2022-11-02 20:34:40,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:40,901 INFO L93 Difference]: Finished difference Result 504 states and 682 transitions. [2022-11-02 20:34:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:34:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.684210526315789) internal successors, (146), 19 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 91 [2022-11-02 20:34:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:40,904 INFO L225 Difference]: With dead ends: 504 [2022-11-02 20:34:40,904 INFO L226 Difference]: Without dead ends: 446 [2022-11-02 20:34:40,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=535, Invalid=1721, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 20:34:40,907 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1008 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:40,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1943 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:34:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-02 20:34:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 117. [2022-11-02 20:34:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.2844827586206897) internal successors, (149), 116 states have internal predecessors, (149), 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) [2022-11-02 20:34:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 149 transitions. [2022-11-02 20:34:40,922 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 149 transitions. Word has length 91 [2022-11-02 20:34:40,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:40,922 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 149 transitions. [2022-11-02 20:34:40,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.684210526315789) internal successors, (146), 19 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) [2022-11-02 20:34:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 149 transitions. [2022-11-02 20:34:40,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:40,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:40,925 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:40,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:41,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:41,146 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1151566073, now seen corresponding path program 1 times [2022-11-02 20:34:41,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:41,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863999937] [2022-11-02 20:34:41,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:41,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:41,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:41,151 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:41,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:34:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:41,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:34:41,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:42,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:47,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:47,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863999937] [2022-11-02 20:34:47,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863999937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:47,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:47,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:34:47,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352129267] [2022-11-02 20:34:47,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:47,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:34:47,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:34:47,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:47,126 INFO L87 Difference]: Start difference. First operand 117 states and 149 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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) [2022-11-02 20:34:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:49,894 INFO L93 Difference]: Finished difference Result 530 states and 713 transitions. [2022-11-02 20:34:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:34:49,895 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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 91 [2022-11-02 20:34:49,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:49,897 INFO L225 Difference]: With dead ends: 530 [2022-11-02 20:34:49,898 INFO L226 Difference]: Without dead ends: 468 [2022-11-02 20:34:49,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=746, Invalid=2794, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 20:34:49,901 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 644 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 422 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:49,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 2406 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 383 Invalid, 0 Unknown, 422 Unchecked, 0.7s Time] [2022-11-02 20:34:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-11-02 20:34:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 121. [2022-11-02 20:34:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.2833333333333334) internal successors, (154), 120 states have internal predecessors, (154), 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) [2022-11-02 20:34:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 154 transitions. [2022-11-02 20:34:49,914 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 154 transitions. Word has length 91 [2022-11-02 20:34:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:49,914 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 154 transitions. [2022-11-02 20:34:49,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 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) [2022-11-02 20:34:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 154 transitions. [2022-11-02 20:34:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:49,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:49,916 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:49,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:34:50,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:50,131 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:50,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1853165947, now seen corresponding path program 1 times [2022-11-02 20:34:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:50,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129703132] [2022-11-02 20:34:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:50,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:50,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:50,135 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:50,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:34:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:50,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:34:50,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:50,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:51,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129703132] [2022-11-02 20:34:51,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129703132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:51,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:51,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:34:51,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485010548] [2022-11-02 20:34:51,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:51,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:34:51,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:51,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:34:51,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:51,402 INFO L87 Difference]: Start difference. First operand 121 states and 154 transitions. Second operand has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:34:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:51,841 INFO L93 Difference]: Finished difference Result 325 states and 436 transitions. [2022-11-02 20:34:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:34:51,842 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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 91 [2022-11-02 20:34:51,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:51,846 INFO L225 Difference]: With dead ends: 325 [2022-11-02 20:34:51,846 INFO L226 Difference]: Without dead ends: 259 [2022-11-02 20:34:51,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:34:51,848 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 225 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:51,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1689 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 250 Unchecked, 0.2s Time] [2022-11-02 20:34:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-02 20:34:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 133. [2022-11-02 20:34:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.2803030303030303) internal successors, (169), 132 states have internal predecessors, (169), 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) [2022-11-02 20:34:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 169 transitions. [2022-11-02 20:34:51,861 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 169 transitions. Word has length 91 [2022-11-02 20:34:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:51,861 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 169 transitions. [2022-11-02 20:34:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:34:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 169 transitions. [2022-11-02 20:34:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:51,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:51,863 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:51,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 20:34:52,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:52,064 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1993714557, now seen corresponding path program 1 times [2022-11-02 20:34:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:52,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603306847] [2022-11-02 20:34:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:52,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:52,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:52,067 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:52,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:34:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:52,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:34:52,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:52,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:53,309 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:53,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:53,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603306847] [2022-11-02 20:34:53,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603306847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:53,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:53,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:34:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276083951] [2022-11-02 20:34:53,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:34:53,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:34:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:53,312 INFO L87 Difference]: Start difference. First operand 133 states and 169 transitions. Second operand has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:34:53,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:34:53,874 INFO L93 Difference]: Finished difference Result 253 states and 338 transitions. [2022-11-02 20:34:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:34:53,876 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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 91 [2022-11-02 20:34:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:34:53,877 INFO L225 Difference]: With dead ends: 253 [2022-11-02 20:34:53,877 INFO L226 Difference]: Without dead ends: 187 [2022-11-02 20:34:53,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:34:53,879 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 187 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:34:53,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1134 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 182 Unchecked, 0.2s Time] [2022-11-02 20:34:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-02 20:34:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 135. [2022-11-02 20:34:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 134 states have internal predecessors, (171), 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) [2022-11-02 20:34:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 171 transitions. [2022-11-02 20:34:53,891 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 171 transitions. Word has length 91 [2022-11-02 20:34:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:34:53,891 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 171 transitions. [2022-11-02 20:34:53,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:34:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 171 transitions. [2022-11-02 20:34:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:34:53,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:34:53,893 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:34:53,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 20:34:54,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:34:54,109 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:34:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:54,109 INFO L85 PathProgramCache]: Analyzing trace with hash 188276223, now seen corresponding path program 1 times [2022-11-02 20:34:54,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:34:54,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206530663] [2022-11-02 20:34:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:54,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:34:54,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:34:54,112 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:34:54,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:34:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:54,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:34:54,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:34:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:55,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:34:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:56,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:34:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206530663] [2022-11-02 20:34:56,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206530663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:34:56,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:34:56,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:34:56,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310463567] [2022-11-02 20:34:56,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:34:56,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:34:56,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:34:56,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:34:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:34:56,615 INFO L87 Difference]: Start difference. First operand 135 states and 171 transitions. Second operand has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:35:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:00,342 INFO L93 Difference]: Finished difference Result 681 states and 927 transitions. [2022-11-02 20:35:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-02 20:35:00,343 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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 91 [2022-11-02 20:35:00,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:00,345 INFO L225 Difference]: With dead ends: 681 [2022-11-02 20:35:00,345 INFO L226 Difference]: Without dead ends: 615 [2022-11-02 20:35:00,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=923, Invalid=3633, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 20:35:00,348 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 544 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 5870 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 794 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:00,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 5870 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 797 Invalid, 0 Unknown, 794 Unchecked, 1.1s Time] [2022-11-02 20:35:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-02 20:35:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 145. [2022-11-02 20:35:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.2847222222222223) internal successors, (185), 144 states have internal predecessors, (185), 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) [2022-11-02 20:35:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 185 transitions. [2022-11-02 20:35:00,362 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 185 transitions. Word has length 91 [2022-11-02 20:35:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:00,363 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 185 transitions. [2022-11-02 20:35:00,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:35:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 185 transitions. [2022-11-02 20:35:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:35:00,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:00,365 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:00,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:00,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:00,584 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:00,584 INFO L85 PathProgramCache]: Analyzing trace with hash 610978049, now seen corresponding path program 1 times [2022-11-02 20:35:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:00,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057058889] [2022-11-02 20:35:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:00,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:00,587 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:00,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:35:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:00,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:35:00,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:01,316 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:01,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:01,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:01,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057058889] [2022-11-02 20:35:01,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057058889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:01,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:01,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:35:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441171749] [2022-11-02 20:35:01,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:35:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:35:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:35:01,819 INFO L87 Difference]: Start difference. First operand 145 states and 185 transitions. Second operand has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 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) [2022-11-02 20:35:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:04,387 INFO L93 Difference]: Finished difference Result 731 states and 997 transitions. [2022-11-02 20:35:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-02 20:35:04,388 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 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 91 [2022-11-02 20:35:04,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:04,393 INFO L225 Difference]: With dead ends: 731 [2022-11-02 20:35:04,394 INFO L226 Difference]: Without dead ends: 655 [2022-11-02 20:35:04,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=924, Invalid=3632, Unknown=0, NotChecked=0, Total=4556 [2022-11-02 20:35:04,398 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 513 mSDsluCounter, 6436 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 7089 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 532 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:04,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 7089 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 747 Invalid, 0 Unknown, 532 Unchecked, 0.9s Time] [2022-11-02 20:35:04,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-02 20:35:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 149. [2022-11-02 20:35:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.2837837837837838) internal successors, (190), 148 states have internal predecessors, (190), 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) [2022-11-02 20:35:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 190 transitions. [2022-11-02 20:35:04,429 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 190 transitions. Word has length 91 [2022-11-02 20:35:04,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:04,429 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 190 transitions. [2022-11-02 20:35:04,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 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) [2022-11-02 20:35:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 190 transitions. [2022-11-02 20:35:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:35:04,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:04,441 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-02 20:35:04,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:04,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:04,653 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:04,653 INFO L85 PathProgramCache]: Analyzing trace with hash -977369853, now seen corresponding path program 1 times [2022-11-02 20:35:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:04,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916966648] [2022-11-02 20:35:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:04,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:04,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:04,655 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:04,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:35:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:04,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:35:04,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:05,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:05,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:05,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916966648] [2022-11-02 20:35:05,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916966648] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:05,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:05,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:35:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661426972] [2022-11-02 20:35:05,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:35:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:35:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:35:05,914 INFO L87 Difference]: Start difference. First operand 149 states and 190 transitions. Second operand has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 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) [2022-11-02 20:35:06,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:06,403 INFO L93 Difference]: Finished difference Result 269 states and 355 transitions. [2022-11-02 20:35:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:35:06,404 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 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 91 [2022-11-02 20:35:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:06,405 INFO L225 Difference]: With dead ends: 269 [2022-11-02 20:35:06,405 INFO L226 Difference]: Without dead ends: 189 [2022-11-02 20:35:06,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:35:06,406 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 102 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:06,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1140 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 0 Unknown, 176 Unchecked, 0.2s Time] [2022-11-02 20:35:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-02 20:35:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 161. [2022-11-02 20:35:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.28125) internal successors, (205), 160 states have internal predecessors, (205), 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) [2022-11-02 20:35:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 205 transitions. [2022-11-02 20:35:06,417 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 205 transitions. Word has length 91 [2022-11-02 20:35:06,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:06,417 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 205 transitions. [2022-11-02 20:35:06,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.1) internal successors, (162), 20 states have internal predecessors, (162), 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) [2022-11-02 20:35:06,418 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 205 transitions. [2022-11-02 20:35:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:35:06,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:06,419 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-11-02 20:35:06,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:06,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:06,620 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash -276305275, now seen corresponding path program 1 times [2022-11-02 20:35:06,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:06,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374839825] [2022-11-02 20:35:06,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:06,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:06,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:06,622 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:06,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:35:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:06,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:35:06,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:08,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:12,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374839825] [2022-11-02 20:35:12,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374839825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:12,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:12,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 20:35:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414333720] [2022-11-02 20:35:12,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:12,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:35:12,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:12,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:35:12,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:35:12,103 INFO L87 Difference]: Start difference. First operand 161 states and 205 transitions. Second operand has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:35:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:14,220 INFO L93 Difference]: Finished difference Result 669 states and 913 transitions. [2022-11-02 20:35:14,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 20:35:14,220 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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 91 [2022-11-02 20:35:14,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:14,223 INFO L225 Difference]: With dead ends: 669 [2022-11-02 20:35:14,223 INFO L226 Difference]: Without dead ends: 589 [2022-11-02 20:35:14,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=516, Invalid=2136, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:35:14,225 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 901 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 3906 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 661 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:14,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 3906 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 478 Invalid, 0 Unknown, 661 Unchecked, 0.6s Time] [2022-11-02 20:35:14,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-02 20:35:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 177. [2022-11-02 20:35:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.2897727272727273) internal successors, (227), 176 states have internal predecessors, (227), 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) [2022-11-02 20:35:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 227 transitions. [2022-11-02 20:35:14,241 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 227 transitions. Word has length 91 [2022-11-02 20:35:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:14,242 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 227 transitions. [2022-11-02 20:35:14,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.6) internal successors, (152), 20 states have internal predecessors, (152), 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) [2022-11-02 20:35:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 227 transitions. [2022-11-02 20:35:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:35:14,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:14,244 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-11-02 20:35:14,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-02 20:35:14,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:14,457 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:14,457 INFO L85 PathProgramCache]: Analyzing trace with hash -274458233, now seen corresponding path program 1 times [2022-11-02 20:35:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:14,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747808516] [2022-11-02 20:35:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:14,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:14,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:14,460 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:14,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:35:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:14,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:35:14,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:35:15,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:35:16,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:16,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747808516] [2022-11-02 20:35:16,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747808516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:16,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:16,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:35:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872151239] [2022-11-02 20:35:16,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:16,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:35:16,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:16,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:35:16,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:35:16,609 INFO L87 Difference]: Start difference. First operand 177 states and 227 transitions. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 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) [2022-11-02 20:35:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:18,478 INFO L93 Difference]: Finished difference Result 897 states and 1226 transitions. [2022-11-02 20:35:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 20:35:18,479 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 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 91 [2022-11-02 20:35:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:18,482 INFO L225 Difference]: With dead ends: 897 [2022-11-02 20:35:18,482 INFO L226 Difference]: Without dead ends: 895 [2022-11-02 20:35:18,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=827, Invalid=2955, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 20:35:18,484 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1375 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:18,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 2075 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 279 Invalid, 0 Unknown, 393 Unchecked, 0.4s Time] [2022-11-02 20:35:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-02 20:35:18,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 277. [2022-11-02 20:35:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.3115942028985508) internal successors, (362), 276 states have internal predecessors, (362), 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) [2022-11-02 20:35:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 362 transitions. [2022-11-02 20:35:18,509 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 362 transitions. Word has length 91 [2022-11-02 20:35:18,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:18,510 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 362 transitions. [2022-11-02 20:35:18,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 states have internal predecessors, (164), 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) [2022-11-02 20:35:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 362 transitions. [2022-11-02 20:35:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:35:18,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:18,517 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:18,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:18,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:18,734 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:18,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash -346844791, now seen corresponding path program 1 times [2022-11-02 20:35:18,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:18,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747677060] [2022-11-02 20:35:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:18,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:18,737 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:18,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:35:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:19,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:35:19,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:19,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 33 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:20,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:20,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747677060] [2022-11-02 20:35:20,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747677060] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:20,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:20,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 20:35:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188389677] [2022-11-02 20:35:20,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:20,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:35:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:35:20,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:35:20,168 INFO L87 Difference]: Start difference. First operand 277 states and 362 transitions. Second operand has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 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) [2022-11-02 20:35:20,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:20,411 INFO L93 Difference]: Finished difference Result 451 states and 603 transitions. [2022-11-02 20:35:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:35:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 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 91 [2022-11-02 20:35:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:20,413 INFO L225 Difference]: With dead ends: 451 [2022-11-02 20:35:20,413 INFO L226 Difference]: Without dead ends: 255 [2022-11-02 20:35:20,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:35:20,415 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 17 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:20,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 847 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 121 Unchecked, 0.1s Time] [2022-11-02 20:35:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-02 20:35:20,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2022-11-02 20:35:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.31496062992126) internal successors, (334), 254 states have internal predecessors, (334), 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) [2022-11-02 20:35:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 334 transitions. [2022-11-02 20:35:20,435 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 334 transitions. Word has length 91 [2022-11-02 20:35:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:20,435 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 334 transitions. [2022-11-02 20:35:20,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7727272727272725) internal successors, (149), 22 states have internal predecessors, (149), 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) [2022-11-02 20:35:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 334 transitions. [2022-11-02 20:35:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:35:20,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:20,438 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:20,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:20,653 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1523655707, now seen corresponding path program 1 times [2022-11-02 20:35:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:20,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523036818] [2022-11-02 20:35:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:20,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:20,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:20,657 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:20,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:35:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:20,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:35:20,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 84 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:21,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 84 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:22,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:22,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523036818] [2022-11-02 20:35:22,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523036818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:22,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:22,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-02 20:35:22,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041068919] [2022-11-02 20:35:22,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:22,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:35:22,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:22,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:35:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:35:22,400 INFO L87 Difference]: Start difference. First operand 255 states and 334 transitions. Second operand has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 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) [2022-11-02 20:35:23,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:23,969 INFO L93 Difference]: Finished difference Result 1287 states and 1732 transitions. [2022-11-02 20:35:23,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 20:35:23,970 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 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 134 [2022-11-02 20:35:23,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:23,974 INFO L225 Difference]: With dead ends: 1287 [2022-11-02 20:35:23,974 INFO L226 Difference]: Without dead ends: 1113 [2022-11-02 20:35:23,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=637, Invalid=3145, Unknown=0, NotChecked=0, Total=3782 [2022-11-02 20:35:23,977 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 898 mSDsluCounter, 2681 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 523 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:23,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 2864 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 234 Invalid, 0 Unknown, 523 Unchecked, 0.3s Time] [2022-11-02 20:35:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-11-02 20:35:24,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 315. [2022-11-02 20:35:24,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.3312101910828025) internal successors, (418), 314 states have internal predecessors, (418), 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) [2022-11-02 20:35:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 418 transitions. [2022-11-02 20:35:24,006 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 418 transitions. Word has length 134 [2022-11-02 20:35:24,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:24,007 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 418 transitions. [2022-11-02 20:35:24,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.793103448275862) internal successors, (168), 29 states have internal predecessors, (168), 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) [2022-11-02 20:35:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 418 transitions. [2022-11-02 20:35:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:35:24,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:24,009 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-02 20:35:24,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:24,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:24,225 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:24,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash 626262429, now seen corresponding path program 1 times [2022-11-02 20:35:24,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:24,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022831808] [2022-11-02 20:35:24,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:24,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:24,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:24,228 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:24,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:35:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:24,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:35:24,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 76 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:25,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 76 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:27,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:27,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022831808] [2022-11-02 20:35:27,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022831808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:27,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:27,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:35:27,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240220175] [2022-11-02 20:35:27,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:35:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:35:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:35:27,755 INFO L87 Difference]: Start difference. First operand 315 states and 418 transitions. Second operand has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 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) [2022-11-02 20:35:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:36,662 INFO L93 Difference]: Finished difference Result 4120 states and 5685 transitions. [2022-11-02 20:35:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-11-02 20:35:36,662 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 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 134 [2022-11-02 20:35:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:36,674 INFO L225 Difference]: With dead ends: 4120 [2022-11-02 20:35:36,674 INFO L226 Difference]: Without dead ends: 3890 [2022-11-02 20:35:36,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11061 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=5174, Invalid=27406, Unknown=0, NotChecked=0, Total=32580 [2022-11-02 20:35:36,682 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1703 mSDsluCounter, 9627 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 10189 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2005 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:36,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 10189 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1320 Invalid, 0 Unknown, 2005 Unchecked, 1.5s Time] [2022-11-02 20:35:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2022-11-02 20:35:36,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 319. [2022-11-02 20:35:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.330188679245283) internal successors, (423), 318 states have internal predecessors, (423), 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) [2022-11-02 20:35:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 423 transitions. [2022-11-02 20:35:36,731 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 423 transitions. Word has length 134 [2022-11-02 20:35:36,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:36,731 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 423 transitions. [2022-11-02 20:35:36,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 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) [2022-11-02 20:35:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 423 transitions. [2022-11-02 20:35:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:35:36,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:36,733 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1] [2022-11-02 20:35:36,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-02 20:35:36,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:36,949 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:36,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:36,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1219104737, now seen corresponding path program 1 times [2022-11-02 20:35:36,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:36,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409795373] [2022-11-02 20:35:36,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:36,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:36,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:36,951 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:36,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:35:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:37,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:35:37,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 68 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:37,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 68 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:38,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:38,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409795373] [2022-11-02 20:35:38,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409795373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:38,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:38,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-02 20:35:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470572609] [2022-11-02 20:35:38,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:35:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:35:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:35:38,631 INFO L87 Difference]: Start difference. First operand 319 states and 423 transitions. Second operand has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 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) [2022-11-02 20:35:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:35:43,516 INFO L93 Difference]: Finished difference Result 2212 states and 3007 transitions. [2022-11-02 20:35:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-11-02 20:35:43,516 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 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 134 [2022-11-02 20:35:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:35:43,520 INFO L225 Difference]: With dead ends: 2212 [2022-11-02 20:35:43,520 INFO L226 Difference]: Without dead ends: 1978 [2022-11-02 20:35:43,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4544 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3008, Invalid=12244, Unknown=0, NotChecked=0, Total=15252 [2022-11-02 20:35:43,523 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2363 mSDsluCounter, 3032 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:35:43,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2363 Valid, 3201 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:35:43,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-11-02 20:35:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 325. [2022-11-02 20:35:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.3271604938271604) internal successors, (430), 324 states have internal predecessors, (430), 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) [2022-11-02 20:35:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 430 transitions. [2022-11-02 20:35:43,564 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 430 transitions. Word has length 134 [2022-11-02 20:35:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:35:43,565 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 430 transitions. [2022-11-02 20:35:43,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.068965517241379) internal successors, (176), 29 states have internal predecessors, (176), 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) [2022-11-02 20:35:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 430 transitions. [2022-11-02 20:35:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:35:43,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:35:43,567 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1] [2022-11-02 20:35:43,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:43,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:35:43,781 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:35:43,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2063110239, now seen corresponding path program 2 times [2022-11-02 20:35:43,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:35:43,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741893332] [2022-11-02 20:35:43,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:35:43,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:35:43,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:35:43,783 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:35:43,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:35:44,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:35:44,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:35:44,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:35:44,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 60 proven. 44 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:46,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 60 proven. 44 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:35:51,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:35:51,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741893332] [2022-11-02 20:35:51,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741893332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:35:51,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:51,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:35:51,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432766751] [2022-11-02 20:35:51,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:35:51,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:35:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:35:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:35:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:35:51,433 INFO L87 Difference]: Start difference. First operand 325 states and 430 transitions. Second operand has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 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) [2022-11-02 20:36:00,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:00,651 INFO L93 Difference]: Finished difference Result 3552 states and 4845 transitions. [2022-11-02 20:36:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-11-02 20:36:00,652 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 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 134 [2022-11-02 20:36:00,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:00,657 INFO L225 Difference]: With dead ends: 3552 [2022-11-02 20:36:00,657 INFO L226 Difference]: Without dead ends: 3312 [2022-11-02 20:36:00,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9818 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=4587, Invalid=24143, Unknown=0, NotChecked=0, Total=28730 [2022-11-02 20:36:00,661 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2952 mSDsluCounter, 5105 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2365 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:00,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 5402 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 901 Invalid, 0 Unknown, 2365 Unchecked, 1.1s Time] [2022-11-02 20:36:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2022-11-02 20:36:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 333. [2022-11-02 20:36:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.3253012048192772) internal successors, (440), 332 states have internal predecessors, (440), 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) [2022-11-02 20:36:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 440 transitions. [2022-11-02 20:36:00,706 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 440 transitions. Word has length 134 [2022-11-02 20:36:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:00,706 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 440 transitions. [2022-11-02 20:36:00,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 states have internal predecessors, (168), 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) [2022-11-02 20:36:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 440 transitions. [2022-11-02 20:36:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:00,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:00,708 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2022-11-02 20:36:00,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:00,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:00,925 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1361510365, now seen corresponding path program 1 times [2022-11-02 20:36:00,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:00,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042491121] [2022-11-02 20:36:00,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:00,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:00,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:00,928 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:00,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:36:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:01,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:36:01,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:01,754 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 48 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:01,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 48 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:02,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:02,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042491121] [2022-11-02 20:36:02,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042491121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:02,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:02,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:36:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348229764] [2022-11-02 20:36:02,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:36:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:02,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:36:02,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:36:02,587 INFO L87 Difference]: Start difference. First operand 333 states and 440 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:09,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:09,266 INFO L93 Difference]: Finished difference Result 3500 states and 4698 transitions. [2022-11-02 20:36:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-11-02 20:36:09,267 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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 134 [2022-11-02 20:36:09,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:09,275 INFO L225 Difference]: With dead ends: 3500 [2022-11-02 20:36:09,275 INFO L226 Difference]: Without dead ends: 3252 [2022-11-02 20:36:09,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8446 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4249, Invalid=22811, Unknown=0, NotChecked=0, Total=27060 [2022-11-02 20:36:09,279 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1465 mSDsluCounter, 9854 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 10481 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1519 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:09,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 10481 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1179 Invalid, 0 Unknown, 1519 Unchecked, 1.2s Time] [2022-11-02 20:36:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2022-11-02 20:36:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 345. [2022-11-02 20:36:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3255813953488371) internal successors, (456), 344 states have internal predecessors, (456), 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) [2022-11-02 20:36:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 456 transitions. [2022-11-02 20:36:09,326 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 456 transitions. Word has length 134 [2022-11-02 20:36:09,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:09,327 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 456 transitions. [2022-11-02 20:36:09,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:09,327 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 456 transitions. [2022-11-02 20:36:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:09,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:09,329 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:09,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-02 20:36:09,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:09,542 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:09,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:09,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1220961755, now seen corresponding path program 1 times [2022-11-02 20:36:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:09,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475064350] [2022-11-02 20:36:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:09,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:09,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:09,545 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:09,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:36:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:09,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:36:09,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:10,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:11,358 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:11,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:11,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475064350] [2022-11-02 20:36:11,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475064350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:11,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:11,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:36:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873782786] [2022-11-02 20:36:11,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:11,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:36:11,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:11,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:36:11,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:36:11,363 INFO L87 Difference]: Start difference. First operand 345 states and 456 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:16,266 INFO L93 Difference]: Finished difference Result 3134 states and 4223 transitions. [2022-11-02 20:36:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-11-02 20:36:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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 134 [2022-11-02 20:36:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:16,277 INFO L225 Difference]: With dead ends: 3134 [2022-11-02 20:36:16,277 INFO L226 Difference]: Without dead ends: 2874 [2022-11-02 20:36:16,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5570 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3309, Invalid=15597, Unknown=0, NotChecked=0, Total=18906 [2022-11-02 20:36:16,280 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1451 mSDsluCounter, 5566 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 5931 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1222 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:16,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 5931 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 757 Invalid, 0 Unknown, 1222 Unchecked, 0.8s Time] [2022-11-02 20:36:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2022-11-02 20:36:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 349. [2022-11-02 20:36:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3218390804597702) internal successors, (460), 348 states have internal predecessors, (460), 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) [2022-11-02 20:36:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 460 transitions. [2022-11-02 20:36:16,328 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 460 transitions. Word has length 134 [2022-11-02 20:36:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:16,328 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 460 transitions. [2022-11-02 20:36:16,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 460 transitions. [2022-11-02 20:36:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:16,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:16,330 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-11-02 20:36:16,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:16,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:16,548 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1268567207, now seen corresponding path program 1 times [2022-11-02 20:36:16,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:16,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906578134] [2022-11-02 20:36:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:16,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:16,550 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:16,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:36:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:16,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 20:36:16,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 40 proven. 64 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:17,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 40 proven. 64 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:20,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:20,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906578134] [2022-11-02 20:36:20,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906578134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:20,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:20,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:36:20,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023386840] [2022-11-02 20:36:20,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:20,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:36:20,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:36:20,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:36:20,146 INFO L87 Difference]: Start difference. First operand 349 states and 460 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:24,925 INFO L93 Difference]: Finished difference Result 2752 states and 3712 transitions. [2022-11-02 20:36:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-02 20:36:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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 134 [2022-11-02 20:36:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:24,934 INFO L225 Difference]: With dead ends: 2752 [2022-11-02 20:36:24,934 INFO L226 Difference]: Without dead ends: 2488 [2022-11-02 20:36:24,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4187 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2739, Invalid=11781, Unknown=0, NotChecked=0, Total=14520 [2022-11-02 20:36:24,936 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 1768 mSDsluCounter, 4459 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 4791 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 924 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:24,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1768 Valid, 4791 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 516 Invalid, 0 Unknown, 924 Unchecked, 0.7s Time] [2022-11-02 20:36:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2022-11-02 20:36:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 353. [2022-11-02 20:36:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3181818181818181) internal successors, (464), 352 states have internal predecessors, (464), 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) [2022-11-02 20:36:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 464 transitions. [2022-11-02 20:36:24,988 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 464 transitions. Word has length 134 [2022-11-02 20:36:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:24,989 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 464 transitions. [2022-11-02 20:36:24,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 464 transitions. [2022-11-02 20:36:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:24,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:24,991 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:25,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-02 20:36:25,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:25,208 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1691269033, now seen corresponding path program 1 times [2022-11-02 20:36:25,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:25,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309894267] [2022-11-02 20:36:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:25,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:25,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:25,212 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:25,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:36:25,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:25,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:36:25,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 80 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:26,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 80 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:27,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:27,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309894267] [2022-11-02 20:36:27,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309894267] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:27,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:27,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:36:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272934589] [2022-11-02 20:36:27,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:27,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:36:27,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:27,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:36:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:36:27,015 INFO L87 Difference]: Start difference. First operand 353 states and 464 transitions. Second operand has 30 states, 30 states have (on average 6.533333333333333) internal successors, (196), 30 states have internal predecessors, (196), 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) [2022-11-02 20:36:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:30,850 INFO L93 Difference]: Finished difference Result 1934 states and 2611 transitions. [2022-11-02 20:36:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-02 20:36:30,853 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.533333333333333) internal successors, (196), 30 states have internal predecessors, (196), 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 134 [2022-11-02 20:36:30,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:30,857 INFO L225 Difference]: With dead ends: 1934 [2022-11-02 20:36:30,857 INFO L226 Difference]: Without dead ends: 1666 [2022-11-02 20:36:30,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2490 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1680, Invalid=8420, Unknown=0, NotChecked=0, Total=10100 [2022-11-02 20:36:30,859 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1811 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:30,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 3283 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:36:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2022-11-02 20:36:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 369. [2022-11-02 20:36:30,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.3206521739130435) internal successors, (486), 368 states have internal predecessors, (486), 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) [2022-11-02 20:36:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 486 transitions. [2022-11-02 20:36:30,902 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 486 transitions. Word has length 134 [2022-11-02 20:36:30,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:30,902 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 486 transitions. [2022-11-02 20:36:30,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.533333333333333) internal successors, (196), 30 states have internal predecessors, (196), 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) [2022-11-02 20:36:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 486 transitions. [2022-11-02 20:36:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:30,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:30,904 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:30,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:31,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:31,121 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1104463019, now seen corresponding path program 2 times [2022-11-02 20:36:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:31,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127682440] [2022-11-02 20:36:31,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:36:31,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:31,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:31,124 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:31,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:36:31,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:36:31,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:36:31,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:36:31,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 96 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:34,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 8 proven. 96 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:41,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:41,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127682440] [2022-11-02 20:36:41,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127682440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:41,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:41,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:36:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189984768] [2022-11-02 20:36:41,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:41,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:36:41,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:36:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:36:41,155 INFO L87 Difference]: Start difference. First operand 369 states and 486 transitions. Second operand has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:50,769 INFO L93 Difference]: Finished difference Result 3672 states and 4996 transitions. [2022-11-02 20:36:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-11-02 20:36:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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 134 [2022-11-02 20:36:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:50,775 INFO L225 Difference]: With dead ends: 3672 [2022-11-02 20:36:50,775 INFO L226 Difference]: Without dead ends: 3388 [2022-11-02 20:36:50,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7247 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=3507, Invalid=19143, Unknown=0, NotChecked=0, Total=22650 [2022-11-02 20:36:50,779 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 2244 mSDsluCounter, 9919 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 10459 SdHoareTripleChecker+Invalid, 4126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2312 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:50,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 10459 Invalid, 4126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1761 Invalid, 0 Unknown, 2312 Unchecked, 2.0s Time] [2022-11-02 20:36:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2022-11-02 20:36:50,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 369. [2022-11-02 20:36:50,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.3206521739130435) internal successors, (486), 368 states have internal predecessors, (486), 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) [2022-11-02 20:36:50,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 486 transitions. [2022-11-02 20:36:50,818 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 486 transitions. Word has length 134 [2022-11-02 20:36:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:50,819 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 486 transitions. [2022-11-02 20:36:50,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.066666666666666) internal successors, (182), 30 states have internal predecessors, (182), 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) [2022-11-02 20:36:50,819 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 486 transitions. [2022-11-02 20:36:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:50,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:50,821 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:50,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:51,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:51,030 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1106310061, now seen corresponding path program 1 times [2022-11-02 20:36:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:51,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586063450] [2022-11-02 20:36:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:51,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:51,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:51,032 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:51,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:36:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:51,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:36:51,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 20:36:52,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-02 20:36:53,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:53,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586063450] [2022-11-02 20:36:53,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586063450] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:53,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:53,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:36:53,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114654815] [2022-11-02 20:36:53,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:53,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:36:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:36:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:36:53,635 INFO L87 Difference]: Start difference. First operand 369 states and 486 transitions. Second operand has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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) [2022-11-02 20:36:55,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:55,183 INFO L93 Difference]: Finished difference Result 1314 states and 1779 transitions. [2022-11-02 20:36:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:36:55,183 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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 134 [2022-11-02 20:36:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:55,185 INFO L225 Difference]: With dead ends: 1314 [2022-11-02 20:36:55,186 INFO L226 Difference]: Without dead ends: 1312 [2022-11-02 20:36:55,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=686, Invalid=2284, Unknown=0, NotChecked=0, Total=2970 [2022-11-02 20:36:55,187 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 809 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:55,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 2436 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 289 Invalid, 0 Unknown, 216 Unchecked, 0.4s Time] [2022-11-02 20:36:55,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2022-11-02 20:36:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 357. [2022-11-02 20:36:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3202247191011236) internal successors, (470), 356 states have internal predecessors, (470), 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) [2022-11-02 20:36:55,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 470 transitions. [2022-11-02 20:36:55,232 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 470 transitions. Word has length 134 [2022-11-02 20:36:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:55,232 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 470 transitions. [2022-11-02 20:36:55,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.25) internal successors, (174), 24 states have internal predecessors, (174), 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) [2022-11-02 20:36:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 470 transitions. [2022-11-02 20:36:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:55,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:55,234 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:55,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 20:36:55,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:55,437 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:55,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1033923503, now seen corresponding path program 2 times [2022-11-02 20:36:55,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:55,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718507068] [2022-11-02 20:36:55,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:36:55,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:55,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:55,440 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:55,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:36:55,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:36:55,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:36:55,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:36:55,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:36:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 76 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:56,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:36:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 76 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:36:57,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:36:57,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718507068] [2022-11-02 20:36:57,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718507068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:57,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:36:57,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-02 20:36:57,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148071249] [2022-11-02 20:36:57,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:57,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:36:57,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:36:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:36:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:36:57,936 INFO L87 Difference]: Start difference. First operand 357 states and 470 transitions. Second operand has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 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) [2022-11-02 20:36:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:36:59,620 INFO L93 Difference]: Finished difference Result 1103 states and 1465 transitions. [2022-11-02 20:36:59,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:36:59,620 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 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 134 [2022-11-02 20:36:59,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:36:59,622 INFO L225 Difference]: With dead ends: 1103 [2022-11-02 20:36:59,622 INFO L226 Difference]: Without dead ends: 831 [2022-11-02 20:36:59,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=540, Invalid=3000, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 20:36:59,624 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 740 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 776 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:36:59,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 2553 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 244 Invalid, 0 Unknown, 776 Unchecked, 0.4s Time] [2022-11-02 20:36:59,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-02 20:36:59,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 337. [2022-11-02 20:36:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3214285714285714) internal successors, (444), 336 states have internal predecessors, (444), 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) [2022-11-02 20:36:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 444 transitions. [2022-11-02 20:36:59,659 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 444 transitions. Word has length 134 [2022-11-02 20:36:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:36:59,659 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 444 transitions. [2022-11-02 20:36:59,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 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) [2022-11-02 20:36:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 444 transitions. [2022-11-02 20:36:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:36:59,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:36:59,660 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:36:59,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:36:59,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:36:59,876 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:36:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1042575449, now seen corresponding path program 2 times [2022-11-02 20:36:59,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:36:59,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088959909] [2022-11-02 20:36:59,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:36:59,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:36:59,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:36:59,879 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:36:59,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:37:00,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:37:00,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:00,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:37:00,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 90 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:37:00,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 90 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:37:01,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:01,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088959909] [2022-11-02 20:37:01,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088959909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:01,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:37:01,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 20:37:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560783644] [2022-11-02 20:37:01,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:01,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:37:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:37:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:37:01,746 INFO L87 Difference]: Start difference. First operand 337 states and 444 transitions. Second operand has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 22 states have internal predecessors, (215), 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) [2022-11-02 20:37:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:02,263 INFO L93 Difference]: Finished difference Result 601 states and 808 transitions. [2022-11-02 20:37:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:37:02,263 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 22 states have internal predecessors, (215), 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 134 [2022-11-02 20:37:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:02,264 INFO L225 Difference]: With dead ends: 601 [2022-11-02 20:37:02,264 INFO L226 Difference]: Without dead ends: 349 [2022-11-02 20:37:02,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 20:37:02,266 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 146 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:02,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1100 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 192 Unchecked, 0.2s Time] [2022-11-02 20:37:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-02 20:37:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 345. [2022-11-02 20:37:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.319767441860465) internal successors, (454), 344 states have internal predecessors, (454), 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) [2022-11-02 20:37:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 454 transitions. [2022-11-02 20:37:02,306 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 454 transitions. Word has length 134 [2022-11-02 20:37:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:02,307 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 454 transitions. [2022-11-02 20:37:02,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 22 states have internal predecessors, (215), 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) [2022-11-02 20:37:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 454 transitions. [2022-11-02 20:37:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:02,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:02,308 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:02,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-02 20:37:02,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:02,526 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1564330457, now seen corresponding path program 3 times [2022-11-02 20:37:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:02,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039528968] [2022-11-02 20:37:02,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:37:02,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:02,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:02,528 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:02,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:37:02,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:37:02,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:37:02,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:37:03,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:37:03,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:03,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039528968] [2022-11-02 20:37:03,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1039528968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:03,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:37:03,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-02 20:37:03,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287544765] [2022-11-02 20:37:03,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:03,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:37:03,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:03,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:37:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:03,666 INFO L87 Difference]: Start difference. First operand 345 states and 454 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 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) [2022-11-02 20:37:04,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:04,017 INFO L93 Difference]: Finished difference Result 955 states and 1300 transitions. [2022-11-02 20:37:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:37:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 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 134 [2022-11-02 20:37:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:04,019 INFO L225 Difference]: With dead ends: 955 [2022-11-02 20:37:04,019 INFO L226 Difference]: Without dead ends: 703 [2022-11-02 20:37:04,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:37:04,020 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 443 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:04,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 305 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:37:04,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-11-02 20:37:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 351. [2022-11-02 20:37:04,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.32) internal successors, (462), 350 states have internal predecessors, (462), 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) [2022-11-02 20:37:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 462 transitions. [2022-11-02 20:37:04,070 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 462 transitions. Word has length 134 [2022-11-02 20:37:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:04,071 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 462 transitions. [2022-11-02 20:37:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 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) [2022-11-02 20:37:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 462 transitions. [2022-11-02 20:37:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:04,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:04,073 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-02 20:37:04,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:04,273 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:04,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:04,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2071105317, now seen corresponding path program 1 times [2022-11-02 20:37:04,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:04,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960416034] [2022-11-02 20:37:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:04,276 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:04,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:37:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:04,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:37:04,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 90 proven. 34 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:37:04,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 90 proven. 34 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:37:05,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:05,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960416034] [2022-11-02 20:37:05,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960416034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:05,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:37:05,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 20:37:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975547132] [2022-11-02 20:37:05,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:05,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:37:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:37:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:37:05,345 INFO L87 Difference]: Start difference. First operand 351 states and 462 transitions. Second operand has 22 states, 22 states have (on average 9.272727272727273) internal successors, (204), 22 states have internal predecessors, (204), 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) [2022-11-02 20:37:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:07,318 INFO L93 Difference]: Finished difference Result 1487 states and 1998 transitions. [2022-11-02 20:37:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:37:07,319 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.272727272727273) internal successors, (204), 22 states have internal predecessors, (204), 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 134 [2022-11-02 20:37:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:07,321 INFO L225 Difference]: With dead ends: 1487 [2022-11-02 20:37:07,321 INFO L226 Difference]: Without dead ends: 1223 [2022-11-02 20:37:07,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2022-11-02 20:37:07,322 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 949 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:07,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2714 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:37:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-11-02 20:37:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 351. [2022-11-02 20:37:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.302857142857143) internal successors, (456), 350 states have internal predecessors, (456), 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) [2022-11-02 20:37:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 456 transitions. [2022-11-02 20:37:07,358 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 456 transitions. Word has length 134 [2022-11-02 20:37:07,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:07,359 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 456 transitions. [2022-11-02 20:37:07,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.272727272727273) internal successors, (204), 22 states have internal predecessors, (204), 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) [2022-11-02 20:37:07,359 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 456 transitions. [2022-11-02 20:37:07,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:07,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:07,360 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:07,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:07,562 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1678050981, now seen corresponding path program 1 times [2022-11-02 20:37:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:07,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195785103] [2022-11-02 20:37:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:07,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:07,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:07,564 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:07,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:37:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:07,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:37:07,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 20:37:08,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 20:37:08,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:08,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195785103] [2022-11-02 20:37:08,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195785103] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:08,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:08,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-02 20:37:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246354956] [2022-11-02 20:37:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:08,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:08,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:37:08,301 INFO L87 Difference]: Start difference. First operand 351 states and 456 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2022-11-02 20:37:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:08,505 INFO L93 Difference]: Finished difference Result 1161 states and 1522 transitions. [2022-11-02 20:37:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:08,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 134 [2022-11-02 20:37:08,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:08,507 INFO L225 Difference]: With dead ends: 1161 [2022-11-02 20:37:08,507 INFO L226 Difference]: Without dead ends: 844 [2022-11-02 20:37:08,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:37:08,508 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 189 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:08,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 292 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:37:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-02 20:37:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 449. [2022-11-02 20:37:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.296875) internal successors, (581), 448 states have internal predecessors, (581), 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) [2022-11-02 20:37:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 581 transitions. [2022-11-02 20:37:08,555 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 581 transitions. Word has length 134 [2022-11-02 20:37:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:08,556 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 581 transitions. [2022-11-02 20:37:08,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2022-11-02 20:37:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 581 transitions. [2022-11-02 20:37:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:08,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:08,558 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:08,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-02 20:37:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:08,776 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:08,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:08,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1601150183, now seen corresponding path program 1 times [2022-11-02 20:37:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:08,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175979738] [2022-11-02 20:37:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:08,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:08,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:08,778 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:08,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:37:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:09,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:37:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 100 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 20:37:09,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 20:37:09,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:09,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175979738] [2022-11-02 20:37:09,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175979738] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:09,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:37:09,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-11-02 20:37:09,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792210414] [2022-11-02 20:37:09,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:09,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:37:09,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:09,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:37:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:37:09,460 INFO L87 Difference]: Start difference. First operand 449 states and 581 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2022-11-02 20:37:09,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:09,668 INFO L93 Difference]: Finished difference Result 1333 states and 1729 transitions. [2022-11-02 20:37:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:37:09,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) Word has length 134 [2022-11-02 20:37:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:09,670 INFO L225 Difference]: With dead ends: 1333 [2022-11-02 20:37:09,671 INFO L226 Difference]: Without dead ends: 928 [2022-11-02 20:37:09,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:37:09,672 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 134 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:09,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 331 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:37:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2022-11-02 20:37:09,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 449. [2022-11-02 20:37:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.28125) internal successors, (574), 448 states have internal predecessors, (574), 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) [2022-11-02 20:37:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 574 transitions. [2022-11-02 20:37:09,726 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 574 transitions. Word has length 134 [2022-11-02 20:37:09,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:09,726 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 574 transitions. [2022-11-02 20:37:09,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2022-11-02 20:37:09,726 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 574 transitions. [2022-11-02 20:37:09,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:09,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:09,728 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:09,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-02 20:37:09,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:09,930 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash -921877929, now seen corresponding path program 1 times [2022-11-02 20:37:09,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:09,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723815877] [2022-11-02 20:37:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:09,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:09,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:09,933 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:09,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:37:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:10,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:37:10,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 84 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:10,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 84 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:11,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:11,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723815877] [2022-11-02 20:37:11,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723815877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:11,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:37:11,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-02 20:37:11,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783087692] [2022-11-02 20:37:11,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:11,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:37:11,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:11,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:37:11,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:37:11,654 INFO L87 Difference]: Start difference. First operand 449 states and 574 transitions. Second operand has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 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) [2022-11-02 20:37:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:14,826 INFO L93 Difference]: Finished difference Result 2314 states and 3111 transitions. [2022-11-02 20:37:14,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-02 20:37:14,827 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 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 134 [2022-11-02 20:37:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:14,830 INFO L225 Difference]: With dead ends: 2314 [2022-11-02 20:37:14,831 INFO L226 Difference]: Without dead ends: 1986 [2022-11-02 20:37:14,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1723 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1434, Invalid=6398, Unknown=0, NotChecked=0, Total=7832 [2022-11-02 20:37:14,833 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 840 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 753 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:14,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 5801 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 659 Invalid, 0 Unknown, 753 Unchecked, 0.7s Time] [2022-11-02 20:37:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2022-11-02 20:37:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 495. [2022-11-02 20:37:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.291497975708502) internal successors, (638), 494 states have internal predecessors, (638), 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) [2022-11-02 20:37:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 638 transitions. [2022-11-02 20:37:14,895 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 638 transitions. Word has length 134 [2022-11-02 20:37:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:14,895 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 638 transitions. [2022-11-02 20:37:14,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.931034482758621) internal successors, (172), 29 states have internal predecessors, (172), 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) [2022-11-02 20:37:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 638 transitions. [2022-11-02 20:37:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:14,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:14,896 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:14,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:15,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:15,097 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1816164567, now seen corresponding path program 1 times [2022-11-02 20:37:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:15,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759100644] [2022-11-02 20:37:15,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:15,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:15,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:15,100 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:15,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:37:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:15,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:37:15,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 72 proven. 32 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:16,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 72 proven. 32 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:16,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:16,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759100644] [2022-11-02 20:37:16,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759100644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:16,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:37:16,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-02 20:37:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146656064] [2022-11-02 20:37:16,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:16,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:37:16,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:37:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:37:16,916 INFO L87 Difference]: Start difference. First operand 495 states and 638 transitions. Second operand has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 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) [2022-11-02 20:37:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:22,304 INFO L93 Difference]: Finished difference Result 3420 states and 4562 transitions. [2022-11-02 20:37:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-11-02 20:37:22,305 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 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 134 [2022-11-02 20:37:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:22,311 INFO L225 Difference]: With dead ends: 3420 [2022-11-02 20:37:22,311 INFO L226 Difference]: Without dead ends: 3046 [2022-11-02 20:37:22,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5169 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3078, Invalid=13178, Unknown=0, NotChecked=0, Total=16256 [2022-11-02 20:37:22,314 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 2453 mSDsluCounter, 3389 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2453 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:22,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2453 Valid, 3590 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:37:22,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-11-02 20:37:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 495. [2022-11-02 20:37:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.291497975708502) internal successors, (638), 494 states have internal predecessors, (638), 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) [2022-11-02 20:37:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 638 transitions. [2022-11-02 20:37:22,406 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 638 transitions. Word has length 134 [2022-11-02 20:37:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:22,407 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 638 transitions. [2022-11-02 20:37:22,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 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) [2022-11-02 20:37:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 638 transitions. [2022-11-02 20:37:22,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:22,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:22,409 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:22,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:22,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:22,627 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:22,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1819271207, now seen corresponding path program 1 times [2022-11-02 20:37:22,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:22,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037927443] [2022-11-02 20:37:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:22,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:22,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:22,630 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:22,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:37:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:22,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:37:22,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 68 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:23,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 68 proven. 36 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:24,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:24,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037927443] [2022-11-02 20:37:24,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037927443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:24,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:37:24,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2022-11-02 20:37:24,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679861093] [2022-11-02 20:37:24,459 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:24,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:37:24,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:24,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:37:24,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=744, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:37:24,460 INFO L87 Difference]: Start difference. First operand 495 states and 638 transitions. Second operand has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2022-11-02 20:37:29,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:29,777 INFO L93 Difference]: Finished difference Result 3029 states and 4054 transitions. [2022-11-02 20:37:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-11-02 20:37:29,777 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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 134 [2022-11-02 20:37:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:29,782 INFO L225 Difference]: With dead ends: 3029 [2022-11-02 20:37:29,782 INFO L226 Difference]: Without dead ends: 2655 [2022-11-02 20:37:29,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4648 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3008, Invalid=12244, Unknown=0, NotChecked=0, Total=15252 [2022-11-02 20:37:29,785 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 1754 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 4404 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:29,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 4404 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:37:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2022-11-02 20:37:29,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 503. [2022-11-02 20:37:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.2908366533864541) internal successors, (648), 502 states have internal predecessors, (648), 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) [2022-11-02 20:37:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 648 transitions. [2022-11-02 20:37:29,889 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 648 transitions. Word has length 134 [2022-11-02 20:37:29,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:29,890 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 648 transitions. [2022-11-02 20:37:29,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.206896551724138) internal successors, (180), 29 states have internal predecessors, (180), 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) [2022-11-02 20:37:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 648 transitions. [2022-11-02 20:37:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:29,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:29,892 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:29,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:30,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:30,105 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:30,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1631690587, now seen corresponding path program 2 times [2022-11-02 20:37:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:30,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102072072] [2022-11-02 20:37:30,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:37:30,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:30,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:30,107 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:30,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:37:30,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:37:30,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:30,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:37:30,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 64 proven. 40 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:31,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 64 proven. 40 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:37:33,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:37:33,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102072072] [2022-11-02 20:37:33,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102072072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:33,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:37:33,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 20:37:33,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586544468] [2022-11-02 20:37:33,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:33,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 20:37:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:37:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 20:37:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:37:33,918 INFO L87 Difference]: Start difference. First operand 503 states and 648 transitions. Second operand has 30 states, 30 states have (on average 5.933333333333334) internal successors, (178), 30 states have internal predecessors, (178), 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) [2022-11-02 20:37:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:37:41,333 INFO L93 Difference]: Finished difference Result 2643 states and 3514 transitions. [2022-11-02 20:37:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-11-02 20:37:41,335 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.933333333333334) internal successors, (178), 30 states have internal predecessors, (178), 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 134 [2022-11-02 20:37:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:37:41,339 INFO L225 Difference]: With dead ends: 2643 [2022-11-02 20:37:41,340 INFO L226 Difference]: Without dead ends: 2261 [2022-11-02 20:37:41,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5842 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3470, Invalid=15162, Unknown=0, NotChecked=0, Total=18632 [2022-11-02 20:37:41,342 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 1580 mSDsluCounter, 4636 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 4868 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:37:41,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 4868 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:37:41,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2022-11-02 20:37:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 505. [2022-11-02 20:37:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.2896825396825398) internal successors, (650), 504 states have internal predecessors, (650), 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) [2022-11-02 20:37:41,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 650 transitions. [2022-11-02 20:37:41,425 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 650 transitions. Word has length 134 [2022-11-02 20:37:41,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:37:41,426 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 650 transitions. [2022-11-02 20:37:41,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.933333333333334) internal successors, (178), 30 states have internal predecessors, (178), 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) [2022-11-02 20:37:41,426 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 650 transitions. [2022-11-02 20:37:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-02 20:37:41,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:37:41,427 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:41,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:41,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:37:41,641 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:37:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:41,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1559304029, now seen corresponding path program 3 times [2022-11-02 20:37:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:37:41,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313534805] [2022-11-02 20:37:41,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:37:41,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:37:41,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:37:41,644 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:37:41,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c367400-0ed2-47bc-9784-dfb27c58b26b/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:37:41,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:37:41,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:41,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:37:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:37:42,799 INFO L328 TraceCheckSpWp]: Computing backward predicates...