/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:57:27,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:57:27,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:57:27,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:57:27,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:57:27,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:57:27,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:57:27,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:57:27,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:57:27,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:57:27,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:57:27,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:57:27,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:57:27,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:57:27,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:57:27,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:57:27,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:57:27,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:57:27,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:57:27,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:57:27,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:57:27,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:57:27,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:57:27,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:57:27,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:57:27,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:57:27,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:57:27,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:57:27,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:57:27,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:57:27,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:57:27,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:57:27,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:57:27,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:57:27,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:57:27,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:57:27,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:57:27,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:57:27,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:57:27,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:57:27,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:57:27,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:57:27,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:57:27,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:57:27,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:57:27,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:57:27,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:57:27,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:57:27,947 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:57:27,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:57:27,948 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:57:27,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:57:27,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:57:27,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:57:27,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:57:27,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:27,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:57:27,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:57:27,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:57:27,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:57:27,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:57:27,951 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:57:27,951 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:57:27,951 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:57:28,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:57:28,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:57:28,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:57:28,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:57:28,178 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:57:28,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2022-09-16 11:57:28,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27201ab05/b4d020f121b04daeb98e14e64db94cd7/FLAGf2225f839 [2022-09-16 11:57:28,597 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:57:28,598 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2022-09-16 11:57:28,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27201ab05/b4d020f121b04daeb98e14e64db94cd7/FLAGf2225f839 [2022-09-16 11:57:28,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27201ab05/b4d020f121b04daeb98e14e64db94cd7 [2022-09-16 11:57:28,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:57:28,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:57:28,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:28,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:57:28,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:57:28,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:28,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dade0fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28, skipping insertion in model container [2022-09-16 11:57:28,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:28,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:57:28,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:57:28,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-09-16 11:57:28,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:28,874 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:57:28,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c[2835,2848] [2022-09-16 11:57:28,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:28,924 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:57:28,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28 WrapperNode [2022-09-16 11:57:28,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:28,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:28,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:57:28,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:57:28,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:28,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:28,985 INFO L138 Inliner]: procedures = 25, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 374 [2022-09-16 11:57:28,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:28,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:57:28,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:57:28,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:57:28,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:28,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:29,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:29,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:29,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:29,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:29,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:29,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:57:29,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:57:29,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:57:29,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:57:29,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (1/1) ... [2022-09-16 11:57:29,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:29,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:29,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:57:29,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:57:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:57:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:57:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:57:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:57:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:57:29,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:57:29,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:57:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:57:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:57:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:57:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:57:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:57:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:57:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:57:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:57:29,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:57:29,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:57:29,089 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:57:29,220 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:57:29,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:57:29,656 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:57:30,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:57:30,786 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:57:30,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:30 BoogieIcfgContainer [2022-09-16 11:57:30,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:57:30,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:57:30,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:57:30,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:57:30,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:57:28" (1/3) ... [2022-09-16 11:57:30,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee89a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:30, skipping insertion in model container [2022-09-16 11:57:30,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:28" (2/3) ... [2022-09-16 11:57:30,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee89a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:30, skipping insertion in model container [2022-09-16 11:57:30,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:30" (3/3) ... [2022-09-16 11:57:30,796 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2022-09-16 11:57:30,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:57:30,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2022-09-16 11:57:30,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:57:31,100 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:57:31,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 251 transitions, 526 flow [2022-09-16 11:57:31,259 INFO L130 PetriNetUnfolder]: 16/248 cut-off events. [2022-09-16 11:57:31,260 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:57:31,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 16/248 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 404 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 194. Up to 2 conditions per place. [2022-09-16 11:57:31,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 251 transitions, 526 flow [2022-09-16 11:57:31,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 227 transitions, 469 flow [2022-09-16 11:57:31,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:57:31,293 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=false, 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;@4b66f01c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:57:31,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2022-09-16 11:57:31,311 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-09-16 11:57:31,314 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:57:31,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:31,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:31,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:57:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1654529998, now seen corresponding path program 1 times [2022-09-16 11:57:31,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:31,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56520390] [2022-09-16 11:57:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:31,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:31,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:31,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56520390] [2022-09-16 11:57:31,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56520390] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:31,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:31,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:57:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396895998] [2022-09-16 11:57:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:57:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:31,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:57:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:57:31,558 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 251 [2022-09-16 11:57:31,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 227 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:31,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:31,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 251 [2022-09-16 11:57:31,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:33,751 INFO L130 PetriNetUnfolder]: 4437/8173 cut-off events. [2022-09-16 11:57:33,752 INFO L131 PetriNetUnfolder]: For 1024/1038 co-relation queries the response was YES. [2022-09-16 11:57:33,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14539 conditions, 8173 events. 4437/8173 cut-off events. For 1024/1038 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 59769 event pairs, 2142 based on Foata normal form. 638/3369 useless extension candidates. Maximal degree in co-relation 7013. Up to 2896 conditions per place. [2022-09-16 11:57:33,866 INFO L137 encePairwiseOnDemand]: 210/251 looper letters, 84 selfloop transitions, 9 changer transitions 5/242 dead transitions. [2022-09-16 11:57:33,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 242 transitions, 700 flow [2022-09-16 11:57:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:57:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:57:33,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 999 transitions. [2022-09-16 11:57:33,883 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7960159362549801 [2022-09-16 11:57:33,884 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 999 transitions. [2022-09-16 11:57:33,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 999 transitions. [2022-09-16 11:57:33,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:33,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 999 transitions. [2022-09-16 11:57:33,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,903 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,905 INFO L175 Difference]: Start difference. First operand has 222 places, 227 transitions, 469 flow. Second operand 5 states and 999 transitions. [2022-09-16 11:57:33,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 242 transitions, 700 flow [2022-09-16 11:57:33,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 242 transitions, 682 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:57:33,919 INFO L231 Difference]: Finished difference. Result has 206 places, 201 transitions, 461 flow [2022-09-16 11:57:33,921 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=461, PETRI_PLACES=206, PETRI_TRANSITIONS=201} [2022-09-16 11:57:33,924 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, -16 predicate places. [2022-09-16 11:57:33,925 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 201 transitions, 461 flow [2022-09-16 11:57:33,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.5) internal successors, (686), 4 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:33,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:33,926 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:33,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:57:33,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:57:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:33,927 INFO L85 PathProgramCache]: Analyzing trace with hash -457926940, now seen corresponding path program 1 times [2022-09-16 11:57:33,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:33,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737582753] [2022-09-16 11:57:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:33,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:34,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737582753] [2022-09-16 11:57:34,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737582753] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:34,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658167633] [2022-09-16 11:57:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:34,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:34,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:34,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:57:34,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:57:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:34,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:34,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:34,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:34,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658167633] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:34,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:34,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:57:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813846607] [2022-09-16 11:57:34,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:57:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:57:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:57:34,580 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 251 [2022-09-16 11:57:34,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 201 transitions, 461 flow. Second operand has 12 states, 12 states have (on average 172.66666666666666) internal successors, (2072), 12 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:34,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:34,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 251 [2022-09-16 11:57:34,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:39,004 INFO L130 PetriNetUnfolder]: 11091/20318 cut-off events. [2022-09-16 11:57:39,004 INFO L131 PetriNetUnfolder]: For 747/782 co-relation queries the response was YES. [2022-09-16 11:57:39,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35507 conditions, 20318 events. 11091/20318 cut-off events. For 747/782 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 159827 event pairs, 5355 based on Foata normal form. 6/6744 useless extension candidates. Maximal degree in co-relation 28204. Up to 2889 conditions per place. [2022-09-16 11:57:39,143 INFO L137 encePairwiseOnDemand]: 236/251 looper letters, 186 selfloop transitions, 40 changer transitions 0/370 dead transitions. [2022-09-16 11:57:39,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 370 transitions, 1325 flow [2022-09-16 11:57:39,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:57:39,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:57:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3292 transitions. [2022-09-16 11:57:39,149 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7286409915891987 [2022-09-16 11:57:39,149 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3292 transitions. [2022-09-16 11:57:39,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3292 transitions. [2022-09-16 11:57:39,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:39,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3292 transitions. [2022-09-16 11:57:39,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 182.88888888888889) internal successors, (3292), 18 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:39,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:39,164 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:39,164 INFO L175 Difference]: Start difference. First operand has 206 places, 201 transitions, 461 flow. Second operand 18 states and 3292 transitions. [2022-09-16 11:57:39,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 370 transitions, 1325 flow [2022-09-16 11:57:39,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 370 transitions, 1320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:57:39,174 INFO L231 Difference]: Finished difference. Result has 221 places, 228 transitions, 694 flow [2022-09-16 11:57:39,175 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=694, PETRI_PLACES=221, PETRI_TRANSITIONS=228} [2022-09-16 11:57:39,176 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, -1 predicate places. [2022-09-16 11:57:39,176 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 228 transitions, 694 flow [2022-09-16 11:57:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 172.66666666666666) internal successors, (2072), 12 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:39,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:39,178 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:39,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:57:39,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:39,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:57:39,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1310831756, now seen corresponding path program 1 times [2022-09-16 11:57:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:39,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198279803] [2022-09-16 11:57:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:39,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:39,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198279803] [2022-09-16 11:57:39,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198279803] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:39,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577798350] [2022-09-16 11:57:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:39,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:39,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:39,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:57:39,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:57:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:39,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:39,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:39,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:57:39,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577798350] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:39,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:57:39,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:57:39,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581252912] [2022-09-16 11:57:39,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:39,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:57:39,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:57:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:57:39,853 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 251 [2022-09-16 11:57:39,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 228 transitions, 694 flow. Second operand has 6 states, 6 states have (on average 172.33333333333334) internal successors, (1034), 6 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:39,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:39,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 251 [2022-09-16 11:57:39,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:44,022 INFO L130 PetriNetUnfolder]: 11091/20310 cut-off events. [2022-09-16 11:57:44,022 INFO L131 PetriNetUnfolder]: For 841/876 co-relation queries the response was YES. [2022-09-16 11:57:44,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35544 conditions, 20310 events. 11091/20310 cut-off events. For 841/876 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 159780 event pairs, 5355 based on Foata normal form. 8/6738 useless extension candidates. Maximal degree in co-relation 28404. Up to 11512 conditions per place. [2022-09-16 11:57:44,141 INFO L137 encePairwiseOnDemand]: 240/251 looper letters, 85 selfloop transitions, 27 changer transitions 0/256 dead transitions. [2022-09-16 11:57:44,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 256 transitions, 946 flow [2022-09-16 11:57:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:57:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:57:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2022-09-16 11:57:44,144 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.730221969265794 [2022-09-16 11:57:44,145 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2022-09-16 11:57:44,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2022-09-16 11:57:44,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:44,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2022-09-16 11:57:44,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:44,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:44,150 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:44,150 INFO L175 Difference]: Start difference. First operand has 221 places, 228 transitions, 694 flow. Second operand 7 states and 1283 transitions. [2022-09-16 11:57:44,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 256 transitions, 946 flow [2022-09-16 11:57:44,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 256 transitions, 872 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:57:44,156 INFO L231 Difference]: Finished difference. Result has 216 places, 220 transitions, 620 flow [2022-09-16 11:57:44,157 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=216, PETRI_TRANSITIONS=220} [2022-09-16 11:57:44,159 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, -6 predicate places. [2022-09-16 11:57:44,159 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 220 transitions, 620 flow [2022-09-16 11:57:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.33333333333334) internal successors, (1034), 6 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:44,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:44,160 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:44,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:57:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:57:44,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:57:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2048188238, now seen corresponding path program 2 times [2022-09-16 11:57:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:44,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451106945] [2022-09-16 11:57:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:44,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:44,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451106945] [2022-09-16 11:57:44,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451106945] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:44,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611593681] [2022-09-16 11:57:44,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:57:44,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:44,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:44,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:57:44,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:57:44,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:57:44,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:57:44,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:57:44,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:57:44,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:57:45,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611593681] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:45,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:45,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:57:45,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712645466] [2022-09-16 11:57:45,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:45,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:57:45,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:57:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:57:45,075 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 251 [2022-09-16 11:57:45,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 220 transitions, 620 flow. Second operand has 18 states, 18 states have (on average 153.61111111111111) internal successors, (2765), 18 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:45,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:45,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 251 [2022-09-16 11:57:45,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:52,105 INFO L130 PetriNetUnfolder]: 19454/35525 cut-off events. [2022-09-16 11:57:52,106 INFO L131 PetriNetUnfolder]: For 831/831 co-relation queries the response was YES. [2022-09-16 11:57:52,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63259 conditions, 35525 events. 19454/35525 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 299075 event pairs, 11501 based on Foata normal form. 4/12261 useless extension candidates. Maximal degree in co-relation 53929. Up to 3769 conditions per place. [2022-09-16 11:57:52,360 INFO L137 encePairwiseOnDemand]: 232/251 looper letters, 295 selfloop transitions, 53 changer transitions 0/472 dead transitions. [2022-09-16 11:57:52,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 472 transitions, 1898 flow [2022-09-16 11:57:52,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:57:52,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:57:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3952 transitions. [2022-09-16 11:57:52,368 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6560424966799469 [2022-09-16 11:57:52,368 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3952 transitions. [2022-09-16 11:57:52,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3952 transitions. [2022-09-16 11:57:52,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:52,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3952 transitions. [2022-09-16 11:57:52,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 164.66666666666666) internal successors, (3952), 24 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:52,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 251.0) internal successors, (6275), 25 states have internal predecessors, (6275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:52,384 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 251.0) internal successors, (6275), 25 states have internal predecessors, (6275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:52,384 INFO L175 Difference]: Start difference. First operand has 216 places, 220 transitions, 620 flow. Second operand 24 states and 3952 transitions. [2022-09-16 11:57:52,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 472 transitions, 1898 flow [2022-09-16 11:57:52,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 472 transitions, 1840 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:57:52,390 INFO L231 Difference]: Finished difference. Result has 229 places, 230 transitions, 725 flow [2022-09-16 11:57:52,391 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=725, PETRI_PLACES=229, PETRI_TRANSITIONS=230} [2022-09-16 11:57:52,391 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, 7 predicate places. [2022-09-16 11:57:52,391 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 230 transitions, 725 flow [2022-09-16 11:57:52,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 153.61111111111111) internal successors, (2765), 18 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:52,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:52,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:52,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:57:52,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:52,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:57:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2050201646, now seen corresponding path program 1 times [2022-09-16 11:57:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:52,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008160089] [2022-09-16 11:57:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:52,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:52,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:52,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008160089] [2022-09-16 11:57:52,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008160089] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:52,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:52,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:57:52,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534589168] [2022-09-16 11:57:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:52,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:57:52,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:57:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:57:52,728 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 251 [2022-09-16 11:57:52,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 230 transitions, 725 flow. Second operand has 7 states, 7 states have (on average 163.28571428571428) internal successors, (1143), 7 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:52,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:52,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 251 [2022-09-16 11:57:52,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:01,771 INFO L130 PetriNetUnfolder]: 26322/49436 cut-off events. [2022-09-16 11:58:01,771 INFO L131 PetriNetUnfolder]: For 1537/1651 co-relation queries the response was YES. [2022-09-16 11:58:01,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87671 conditions, 49436 events. 26322/49436 cut-off events. For 1537/1651 co-relation queries the response was YES. Maximal size of possible extension queue 1160. Compared 455628 event pairs, 15466 based on Foata normal form. 0/19916 useless extension candidates. Maximal degree in co-relation 10960. Up to 27544 conditions per place. [2022-09-16 11:58:02,035 INFO L137 encePairwiseOnDemand]: 237/251 looper letters, 180 selfloop transitions, 23 changer transitions 0/345 dead transitions. [2022-09-16 11:58:02,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 345 transitions, 1452 flow [2022-09-16 11:58:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:58:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:58:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1933 transitions. [2022-09-16 11:58:02,051 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7001086562839551 [2022-09-16 11:58:02,051 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1933 transitions. [2022-09-16 11:58:02,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1933 transitions. [2022-09-16 11:58:02,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:02,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1933 transitions. [2022-09-16 11:58:02,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 175.72727272727272) internal successors, (1933), 11 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:02,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:02,059 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:02,059 INFO L175 Difference]: Start difference. First operand has 229 places, 230 transitions, 725 flow. Second operand 11 states and 1933 transitions. [2022-09-16 11:58:02,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 345 transitions, 1452 flow [2022-09-16 11:58:02,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 345 transitions, 1352 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-09-16 11:58:02,064 INFO L231 Difference]: Finished difference. Result has 227 places, 237 transitions, 733 flow [2022-09-16 11:58:02,064 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=733, PETRI_PLACES=227, PETRI_TRANSITIONS=237} [2022-09-16 11:58:02,065 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, 5 predicate places. [2022-09-16 11:58:02,065 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 237 transitions, 733 flow [2022-09-16 11:58:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.28571428571428) internal successors, (1143), 7 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:02,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:02,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:02,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:58:02,066 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:58:02,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:02,066 INFO L85 PathProgramCache]: Analyzing trace with hash -186796926, now seen corresponding path program 1 times [2022-09-16 11:58:02,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:02,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052821638] [2022-09-16 11:58:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:02,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:02,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:02,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052821638] [2022-09-16 11:58:02,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052821638] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:02,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:02,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:58:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197870830] [2022-09-16 11:58:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:02,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:58:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:58:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:58:02,176 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 251 [2022-09-16 11:58:02,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 237 transitions, 733 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 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) [2022-09-16 11:58:02,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:02,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 251 [2022-09-16 11:58:02,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:11,539 INFO L130 PetriNetUnfolder]: 28757/52272 cut-off events. [2022-09-16 11:58:11,540 INFO L131 PetriNetUnfolder]: For 2841/2841 co-relation queries the response was YES. [2022-09-16 11:58:11,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92267 conditions, 52272 events. 28757/52272 cut-off events. For 2841/2841 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 477658 event pairs, 5237 based on Foata normal form. 0/20560 useless extension candidates. Maximal degree in co-relation 26524. Up to 28501 conditions per place. [2022-09-16 11:58:11,902 INFO L137 encePairwiseOnDemand]: 244/251 looper letters, 48 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-09-16 11:58:11,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 259 transitions, 883 flow [2022-09-16 11:58:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:58:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:58:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2022-09-16 11:58:11,908 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8300132802124834 [2022-09-16 11:58:11,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2022-09-16 11:58:11,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2022-09-16 11:58:11,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:11,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2022-09-16 11:58:11,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:11,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:11,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:11,911 INFO L175 Difference]: Start difference. First operand has 227 places, 237 transitions, 733 flow. Second operand 3 states and 625 transitions. [2022-09-16 11:58:11,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 259 transitions, 883 flow [2022-09-16 11:58:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 259 transitions, 878 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:58:11,918 INFO L231 Difference]: Finished difference. Result has 228 places, 239 transitions, 753 flow [2022-09-16 11:58:11,918 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=753, PETRI_PLACES=228, PETRI_TRANSITIONS=239} [2022-09-16 11:58:11,919 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, 6 predicate places. [2022-09-16 11:58:11,919 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 239 transitions, 753 flow [2022-09-16 11:58:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 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) [2022-09-16 11:58:11,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:11,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:11,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:58:11,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:58:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -186796933, now seen corresponding path program 1 times [2022-09-16 11:58:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:11,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84890066] [2022-09-16 11:58:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:12,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:12,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84890066] [2022-09-16 11:58:12,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84890066] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:12,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:12,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:58:12,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935482843] [2022-09-16 11:58:12,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:12,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:58:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:58:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:58:12,074 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 251 [2022-09-16 11:58:12,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 239 transitions, 753 flow. Second operand has 10 states, 10 states have (on average 134.1) internal successors, (1341), 10 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:12,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:12,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 251 [2022-09-16 11:58:12,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:23,853 INFO L130 PetriNetUnfolder]: 35705/64143 cut-off events. [2022-09-16 11:58:23,853 INFO L131 PetriNetUnfolder]: For 11796/12195 co-relation queries the response was YES. [2022-09-16 11:58:24,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130915 conditions, 64143 events. 35705/64143 cut-off events. For 11796/12195 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 575714 event pairs, 27192 based on Foata normal form. 399/35017 useless extension candidates. Maximal degree in co-relation 44143. Up to 48652 conditions per place. [2022-09-16 11:58:24,374 INFO L137 encePairwiseOnDemand]: 234/251 looper letters, 154 selfloop transitions, 21 changer transitions 2/303 dead transitions. [2022-09-16 11:58:24,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 303 transitions, 1295 flow [2022-09-16 11:58:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:58:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:58:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1444 transitions. [2022-09-16 11:58:24,377 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5752988047808765 [2022-09-16 11:58:24,377 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1444 transitions. [2022-09-16 11:58:24,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1444 transitions. [2022-09-16 11:58:24,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:24,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1444 transitions. [2022-09-16 11:58:24,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.4) internal successors, (1444), 10 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 251.0) internal successors, (2761), 11 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,382 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 251.0) internal successors, (2761), 11 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,383 INFO L175 Difference]: Start difference. First operand has 228 places, 239 transitions, 753 flow. Second operand 10 states and 1444 transitions. [2022-09-16 11:58:24,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 303 transitions, 1295 flow [2022-09-16 11:58:24,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 303 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:24,572 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 822 flow [2022-09-16 11:58:24,573 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=822, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2022-09-16 11:58:24,573 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, 19 predicate places. [2022-09-16 11:58:24,573 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 822 flow [2022-09-16 11:58:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.1) internal successors, (1341), 10 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:24,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:24,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:58:24,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:58:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2037525084, now seen corresponding path program 1 times [2022-09-16 11:58:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:24,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256062817] [2022-09-16 11:58:24,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:24,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:24,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256062817] [2022-09-16 11:58:24,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256062817] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:24,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:24,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:58:24,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509012953] [2022-09-16 11:58:24,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:24,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:58:24,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:24,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:58:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:58:24,691 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 251 [2022-09-16 11:58:24,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 822 flow. Second operand has 10 states, 10 states have (on average 135.2) internal successors, (1352), 10 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:24,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 251 [2022-09-16 11:58:24,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:35,134 INFO L130 PetriNetUnfolder]: 32564/56400 cut-off events. [2022-09-16 11:58:35,135 INFO L131 PetriNetUnfolder]: For 13618/13744 co-relation queries the response was YES. [2022-09-16 11:58:35,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119229 conditions, 56400 events. 32564/56400 cut-off events. For 13618/13744 co-relation queries the response was YES. Maximal size of possible extension queue 1263. Compared 478418 event pairs, 23458 based on Foata normal form. 126/30146 useless extension candidates. Maximal degree in co-relation 117296. Up to 42274 conditions per place. [2022-09-16 11:58:35,620 INFO L137 encePairwiseOnDemand]: 233/251 looper letters, 113 selfloop transitions, 16 changer transitions 72/326 dead transitions. [2022-09-16 11:58:35,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 326 transitions, 1471 flow [2022-09-16 11:58:35,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2526 transitions. [2022-09-16 11:58:35,625 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5590969455511288 [2022-09-16 11:58:35,625 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2526 transitions. [2022-09-16 11:58:35,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2526 transitions. [2022-09-16 11:58:35,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:35,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2526 transitions. [2022-09-16 11:58:35,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 140.33333333333334) internal successors, (2526), 18 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,634 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,634 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 822 flow. Second operand 18 states and 2526 transitions. [2022-09-16 11:58:35,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 326 transitions, 1471 flow [2022-09-16 11:58:35,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 326 transitions, 1441 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:58:35,654 INFO L231 Difference]: Finished difference. Result has 258 places, 231 transitions, 756 flow [2022-09-16 11:58:35,654 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=756, PETRI_PLACES=258, PETRI_TRANSITIONS=231} [2022-09-16 11:58:35,654 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, 36 predicate places. [2022-09-16 11:58:35,655 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 231 transitions, 756 flow [2022-09-16 11:58:35,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.2) internal successors, (1352), 10 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:35,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:35,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:58:35,655 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:58:35,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:35,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1320537517, now seen corresponding path program 1 times [2022-09-16 11:58:35,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:35,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974870277] [2022-09-16 11:58:35,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:35,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:58:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:35,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974870277] [2022-09-16 11:58:35,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974870277] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:35,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:35,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:58:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639040947] [2022-09-16 11:58:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:58:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:58:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:58:35,746 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 251 [2022-09-16 11:58:35,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 231 transitions, 756 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:35,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:35,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 251 [2022-09-16 11:58:35,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:49,241 INFO L130 PetriNetUnfolder]: 34321/56749 cut-off events. [2022-09-16 11:58:49,242 INFO L131 PetriNetUnfolder]: For 5524/7750 co-relation queries the response was YES. [2022-09-16 11:58:49,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115003 conditions, 56749 events. 34321/56749 cut-off events. For 5524/7750 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 515424 event pairs, 17832 based on Foata normal form. 0/21661 useless extension candidates. Maximal degree in co-relation 113543. Up to 25627 conditions per place. [2022-09-16 11:58:49,783 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 50 selfloop transitions, 2 changer transitions 0/255 dead transitions. [2022-09-16 11:58:49,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 255 transitions, 921 flow [2022-09-16 11:58:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:58:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:58:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2022-09-16 11:58:49,784 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8326693227091634 [2022-09-16 11:58:49,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2022-09-16 11:58:49,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2022-09-16 11:58:49,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:49,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2022-09-16 11:58:49,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:49,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:49,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:49,787 INFO L175 Difference]: Start difference. First operand has 258 places, 231 transitions, 756 flow. Second operand 3 states and 627 transitions. [2022-09-16 11:58:49,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 255 transitions, 921 flow [2022-09-16 11:58:49,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 255 transitions, 809 flow, removed 12 selfloop flow, removed 21 redundant places. [2022-09-16 11:58:49,817 INFO L231 Difference]: Finished difference. Result has 220 places, 232 transitions, 658 flow [2022-09-16 11:58:49,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=220, PETRI_TRANSITIONS=232} [2022-09-16 11:58:49,818 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, -2 predicate places. [2022-09-16 11:58:49,818 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 232 transitions, 658 flow [2022-09-16 11:58:49,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:49,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:49,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:49,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:58:49,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:58:49,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:49,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1320537527, now seen corresponding path program 1 times [2022-09-16 11:58:49,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:49,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507431684] [2022-09-16 11:58:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:58:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:50,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507431684] [2022-09-16 11:58:50,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507431684] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:50,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535618979] [2022-09-16 11:58:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:50,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:50,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:58:50,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:58:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:50,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 33 conjunts are in the unsatisfiable core [2022-09-16 11:58:50,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:50,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:58:50,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:58:50,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:58:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:58:50,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:50,925 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_201) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:58:50,973 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_201) |c_ULTIMATE.start_main_#t~ret19#1.base|) |c_ULTIMATE.start_main_#t~ret19#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:50,987 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_201) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:50,991 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_201) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:51,031 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:51,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 11:58:51,038 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:51,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 11:58:51,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-09-16 11:58:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-09-16 11:58:51,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535618979] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:51,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:51,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 32 [2022-09-16 11:58:51,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99834389] [2022-09-16 11:58:51,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:51,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-09-16 11:58:51,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:51,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-09-16 11:58:51,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=708, Unknown=4, NotChecked=228, Total=1056 [2022-09-16 11:58:51,236 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 251 [2022-09-16 11:58:51,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 232 transitions, 658 flow. Second operand has 33 states, 33 states have (on average 144.06060606060606) internal successors, (4754), 33 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:51,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:51,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 251 [2022-09-16 11:58:51,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:45,087 INFO L130 PetriNetUnfolder]: 131920/210330 cut-off events. [2022-09-16 11:59:45,087 INFO L131 PetriNetUnfolder]: For 14972/21764 co-relation queries the response was YES. [2022-09-16 11:59:45,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431661 conditions, 210330 events. 131920/210330 cut-off events. For 14972/21764 co-relation queries the response was YES. Maximal size of possible extension queue 6071. Compared 2102268 event pairs, 50232 based on Foata normal form. 0/93895 useless extension candidates. Maximal degree in co-relation 175153. Up to 113215 conditions per place. [2022-09-16 11:59:46,698 INFO L137 encePairwiseOnDemand]: 216/251 looper letters, 121 selfloop transitions, 52 changer transitions 0/301 dead transitions. [2022-09-16 11:59:46,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 301 transitions, 1170 flow [2022-09-16 11:59:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:59:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:59:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2690 transitions. [2022-09-16 11:59:46,702 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5953961930057547 [2022-09-16 11:59:46,702 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2690 transitions. [2022-09-16 11:59:46,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2690 transitions. [2022-09-16 11:59:46,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:46,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2690 transitions. [2022-09-16 11:59:46,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 149.44444444444446) internal successors, (2690), 18 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:46,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:46,711 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 251.0) internal successors, (4769), 19 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:46,711 INFO L175 Difference]: Start difference. First operand has 220 places, 232 transitions, 658 flow. Second operand 18 states and 2690 transitions. [2022-09-16 11:59:46,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 301 transitions, 1170 flow [2022-09-16 11:59:46,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 301 transitions, 1168 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:46,716 INFO L231 Difference]: Finished difference. Result has 245 places, 265 transitions, 919 flow [2022-09-16 11:59:46,717 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=919, PETRI_PLACES=245, PETRI_TRANSITIONS=265} [2022-09-16 11:59:46,717 INFO L287 CegarLoopForPetriNet]: 222 programPoint places, 23 predicate places. [2022-09-16 11:59:46,717 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 265 transitions, 919 flow [2022-09-16 11:59:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 144.06060606060606) internal successors, (4754), 33 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:46,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:46,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:46,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:46,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:46,931 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2022-09-16 11:59:46,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:46,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1320537522, now seen corresponding path program 1 times [2022-09-16 11:59:46,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495078453] [2022-09-16 11:59:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:47,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495078453] [2022-09-16 11:59:47,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495078453] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:47,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618974755] [2022-09-16 11:59:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:47,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:47,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:47,684 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:47,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:59:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:48,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 39 conjunts are in the unsatisfiable core [2022-09-16 11:59:48,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:48,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:59:48,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:59:48,441 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:59:48,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:59:48,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:59:48,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:48,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:59:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:48,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:48,873 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_238 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_238) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2022-09-16 11:59:48,917 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_238 (Array Int Int)) (v_ArrVal_237 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_237) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_238) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2022-09-16 11:59:48,931 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_238 (Array Int Int)) (v_ArrVal_237 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc29#1.base| v_ArrVal_237) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_238) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2022-09-16 11:59:49,263 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:49,264 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-09-16 11:59:49,270 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:49,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 70 [2022-09-16 11:59:49,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2022-09-16 11:59:49,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2022-09-16 11:59:49,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-09-16 11:59:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:59:49,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618974755] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:49,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:49,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 15, 15] total 52 [2022-09-16 11:59:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217251080] [2022-09-16 11:59:49,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:49,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-09-16 11:59:49,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:49,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-09-16 11:59:49,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2256, Unknown=10, NotChecked=294, Total=2756 [2022-09-16 11:59:49,590 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 251 [2022-09-16 11:59:49,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 265 transitions, 919 flow. Second operand has 53 states, 53 states have (on average 92.09433962264151) internal successors, (4881), 53 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:49,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:49,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 251 [2022-09-16 11:59:49,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand