/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-FA-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-counter-determinism.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:00:52,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:00:52,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:00:52,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:00:52,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:00:52,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:00:52,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:00:52,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:00:52,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:00:52,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:00:52,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:00:52,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:00:52,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:00:52,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:00:52,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:00:52,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:00:52,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:00:52,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:00:52,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:00:52,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:00:52,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:00:52,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:00:52,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:00:52,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:00:52,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:00:52,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:00:52,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:00:52,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:00:52,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:00:52,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:00:52,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:00:52,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:00:52,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:00:52,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:00:52,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:00:52,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:00:52,457 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-FA-NoLbe.epf [2022-09-16 11:00:52,488 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:00:52,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:00:52,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:00:52,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:00:52,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:00:52,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:00:52,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:00:52,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:00:52,490 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:00:52,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:00:52,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:00:52,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:00:52,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:00:52,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:00:52,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:00:52,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:00:52,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:00:52,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:00:52,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:00:52,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:00:52,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:00:52,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:00:52,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:00:52,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:00:52,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:00:52,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:00:52,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:00:52,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:00:52,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:00:52,780 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:00:52,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2022-09-16 11:00:52,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bc6fd73/c25f1869c9464e0e89f43aaa8676071a/FLAGedf41d25d [2022-09-16 11:00:53,268 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:00:53,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2022-09-16 11:00:53,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bc6fd73/c25f1869c9464e0e89f43aaa8676071a/FLAGedf41d25d [2022-09-16 11:00:53,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01bc6fd73/c25f1869c9464e0e89f43aaa8676071a [2022-09-16 11:00:53,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:00:53,671 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:00:53,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:00:53,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:00:53,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:00:53,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:53,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18891bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53, skipping insertion in model container [2022-09-16 11:00:53,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:53,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:00:53,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:00:53,874 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-counter-determinism.wvr.c[2476,2489] [2022-09-16 11:00:53,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:00:53,890 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:00:53,908 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-counter-determinism.wvr.c[2476,2489] [2022-09-16 11:00:53,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:00:53,920 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:00:53,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53 WrapperNode [2022-09-16 11:00:53,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:00:53,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:00:53,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:00:53,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:00:53,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:53,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:53,972 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2022-09-16 11:00:53,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:00:53,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:00:53,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:00:53,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:00:53,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:53,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:53,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:53,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:54,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:54,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:54,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:54,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:00:54,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:00:54,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:00:54,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:00:54,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (1/1) ... [2022-09-16 11:00:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:00:54,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:00:54,065 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 11:00:54,083 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 11:00:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:00:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:00:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:00:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:00:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:00:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:00:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:00:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:00:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:00:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:00:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:00:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:00:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:00:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:00:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:00:54,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:00:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:00:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:00:54,108 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 11:00:54,186 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:00:54,188 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:00:54,531 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:00:54,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:00:54,651 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:00:54,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:00:54 BoogieIcfgContainer [2022-09-16 11:00:54,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:00:54,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:00:54,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:00:54,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:00:54,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:00:53" (1/3) ... [2022-09-16 11:00:54,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46474cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:00:54, skipping insertion in model container [2022-09-16 11:00:54,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:00:53" (2/3) ... [2022-09-16 11:00:54,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46474cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:00:54, skipping insertion in model container [2022-09-16 11:00:54,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:00:54" (3/3) ... [2022-09-16 11:00:54,663 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-09-16 11:00:54,672 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:00:54,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:00:54,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-09-16 11:00:54,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:00:54,778 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:00:54,808 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 151 places, 147 transitions, 326 flow [2022-09-16 11:01:02,004 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234620 states, 233996 states have (on average 4.904374433751005) internal successors, (1147604), 234619 states have internal predecessors, (1147604), 0 states have call successors, (0), 0 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 11:01:02,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:01:02,638 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@482c1f87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:01:02,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-09-16 11:01:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 234620 states, 233996 states have (on average 4.904374433751005) internal successors, (1147604), 234619 states have internal predecessors, (1147604), 0 states have call successors, (0), 0 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 11:01:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-09-16 11:01:03,154 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:01:03,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:01:03,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:01:03,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:01:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash 903411107, now seen corresponding path program 1 times [2022-09-16 11:01:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:01:03,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232825432] [2022-09-16 11:01:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:01:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:01:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:01:03,387 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 11:01:03,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:01:03,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232825432] [2022-09-16 11:01:03,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232825432] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:01:03,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:01:03,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:01:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537921449] [2022-09-16 11:01:03,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:01:03,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:01:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:01:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:01:03,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:01:04,050 INFO L87 Difference]: Start difference. First operand has 234620 states, 233996 states have (on average 4.904374433751005) internal successors, (1147604), 234619 states have internal predecessors, (1147604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:01:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:01:08,941 INFO L93 Difference]: Finished difference Result 230360 states and 1057820 transitions. [2022-09-16 11:01:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:01:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-09-16 11:01:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:01:12,205 INFO L225 Difference]: With dead ends: 230360 [2022-09-16 11:01:12,205 INFO L226 Difference]: Without dead ends: 229955 [2022-09-16 11:01:12,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:01:12,210 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 67 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:01:12,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 177 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:01:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229955 states. [2022-09-16 11:01:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229955 to 219410. [2022-09-16 11:01:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219410 states, 218992 states have (on average 4.635836012274421) internal successors, (1015211), 219409 states have internal predecessors, (1015211), 0 states have call successors, (0), 0 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 11:01:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219410 states to 219410 states and 1015211 transitions. [2022-09-16 11:01:27,599 INFO L78 Accepts]: Start accepts. Automaton has 219410 states and 1015211 transitions. Word has length 29 [2022-09-16 11:01:27,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:01:27,599 INFO L495 AbstractCegarLoop]: Abstraction has 219410 states and 1015211 transitions. [2022-09-16 11:01:27,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:01:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 219410 states and 1015211 transitions. [2022-09-16 11:01:27,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-09-16 11:01:27,601 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:01:27,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:01:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:01:27,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:01:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:01:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 594695334, now seen corresponding path program 1 times [2022-09-16 11:01:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:01:27,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565895291] [2022-09-16 11:01:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:01:27,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:01:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:01:27,653 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 11:01:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:01:27,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565895291] [2022-09-16 11:01:27,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565895291] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:01:27,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:01:27,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:01:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735891135] [2022-09-16 11:01:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:01:27,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:01:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:01:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:01:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:01:27,657 INFO L87 Difference]: Start difference. First operand 219410 states and 1015211 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:01:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:01:32,927 INFO L93 Difference]: Finished difference Result 295505 states and 1361912 transitions. [2022-09-16 11:01:32,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:01:32,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-09-16 11:01:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:01:36,653 INFO L225 Difference]: With dead ends: 295505 [2022-09-16 11:01:36,653 INFO L226 Difference]: Without dead ends: 295505 [2022-09-16 11:01:36,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:01:36,655 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 209 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:01:36,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 466 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:01:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295505 states. [2022-09-16 11:01:55,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295505 to 258740. [2022-09-16 11:01:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258740 states, 258322 states have (on average 4.640344221552946) internal successors, (1198703), 258739 states have internal predecessors, (1198703), 0 states have call successors, (0), 0 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 11:02:00,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258740 states to 258740 states and 1198703 transitions. [2022-09-16 11:02:00,372 INFO L78 Accepts]: Start accepts. Automaton has 258740 states and 1198703 transitions. Word has length 31 [2022-09-16 11:02:00,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:02:00,372 INFO L495 AbstractCegarLoop]: Abstraction has 258740 states and 1198703 transitions. [2022-09-16 11:02:00,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 258740 states and 1198703 transitions. [2022-09-16 11:02:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-09-16 11:02:00,389 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:02:00,396 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:02:00,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:02:00,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:02:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:02:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1076040062, now seen corresponding path program 1 times [2022-09-16 11:02:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:02:00,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758821416] [2022-09-16 11:02:00,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:00,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:02:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:00,564 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 11:02:00,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:02:00,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758821416] [2022-09-16 11:02:00,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758821416] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:02:00,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306602126] [2022-09-16 11:02:00,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:00,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:02:00,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:02:00,573 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 11:02:00,579 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 11:02:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:00,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:02:00,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:02:01,245 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 11:02:01,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:02:01,356 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 11:02:01,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306602126] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:02:01,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:02:01,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:02:01,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840886608] [2022-09-16 11:02:01,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:02:01,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:02:01,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:02:01,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:02:01,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:02:01,364 INFO L87 Difference]: Start difference. First operand 258740 states and 1198703 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)