/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:40:39,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:40:39,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:40:39,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:40:39,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:40:39,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:40:39,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:40:39,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:40:39,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:40:39,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:40:39,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:40:39,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:40:39,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:40:39,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:40:39,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:40:39,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:40:39,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:40:39,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:40:39,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:40:39,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:40:39,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:40:39,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:40:39,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:40:39,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:40:39,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:40:39,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:40:39,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:40:39,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:40:39,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:40:39,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:40:39,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:40:39,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:40:39,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:40:39,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:40:39,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:40:39,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:40:39,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:40:39,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:40:39,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:40:39,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:40:39,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:40:39,912 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-SemanticLbe.epf [2022-12-12 15:40:39,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:40:39,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:40:39,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:40:39,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:40:39,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:40:39,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:40:39,942 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:40:39,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:40:39,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:40:39,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:40:39,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:40:39,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:40:39,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:40:39,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:40:39,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:40:39,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:40:39,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:40:39,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:40:39,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:40:39,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:40:39,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:40:39,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:40:39,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:40:39,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:40:40,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:40:40,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:40:40,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:40:40,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:40:40,270 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:40:40,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-12-12 15:40:41,267 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:40:41,473 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:40:41,473 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-12-12 15:40:41,497 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfc8bd0b/5077d87e2fc345488e72fc4a1f45670c/FLAG727c47f19 [2022-12-12 15:40:41,513 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfc8bd0b/5077d87e2fc345488e72fc4a1f45670c [2022-12-12 15:40:41,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:40:41,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:40:41,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:40:41,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:40:41,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:40:41,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68d583bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41, skipping insertion in model container [2022-12-12 15:40:41,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:40:41,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:40:41,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,664 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,676 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2022-12-12 15:40:41,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:40:41,686 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:40:41,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:40:41,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:40:41,708 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2022-12-12 15:40:41,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:40:41,722 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:40:41,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41 WrapperNode [2022-12-12 15:40:41,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:40:41,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:40:41,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:40:41,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:40:41,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,753 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 15:40:41,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:40:41,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:40:41,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:40:41,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:40:41,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:40:41,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:40:41,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:40:41,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:40:41,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (1/1) ... [2022-12-12 15:40:41,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:40:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:40:41,811 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) [2022-12-12 15:40:41,816 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 [2022-12-12 15:40:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:40:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:40:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:40:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:40:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:40:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 15:40:41,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 15:40:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:40:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:40:41,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:40:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:40:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:40:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:40:41,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:40:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:40:41,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:40:41,855 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 15:40:41,939 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:40:41,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:40:42,067 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:40:42,103 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:40:42,104 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 15:40:42,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:40:42 BoogieIcfgContainer [2022-12-12 15:40:42,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:40:42,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:40:42,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:40:42,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:40:42,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:40:41" (1/3) ... [2022-12-12 15:40:42,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a242b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:40:42, skipping insertion in model container [2022-12-12 15:40:42,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:40:41" (2/3) ... [2022-12-12 15:40:42,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a242b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:40:42, skipping insertion in model container [2022-12-12 15:40:42,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:40:42" (3/3) ... [2022-12-12 15:40:42,112 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2022-12-12 15:40:42,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:40:42,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:40:42,133 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:40:42,209 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 15:40:42,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 198 flow [2022-12-12 15:40:42,303 INFO L130 PetriNetUnfolder]: 2/84 cut-off events. [2022-12-12 15:40:42,304 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:40:42,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 2/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 24 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 15:40:42,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 87 transitions, 198 flow [2022-12-12 15:40:42,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 74 transitions, 166 flow [2022-12-12 15:40:42,311 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:40:42,328 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 166 flow [2022-12-12 15:40:42,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 166 flow [2022-12-12 15:40:42,360 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2022-12-12 15:40:42,360 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:40:42,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 2/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 23 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-12 15:40:42,363 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 166 flow [2022-12-12 15:40:42,363 INFO L226 LiptonReduction]: Number of co-enabled transitions 360 [2022-12-12 15:40:44,489 INFO L241 LiptonReduction]: Total number of compositions: 58 [2022-12-12 15:40:44,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:40:44,504 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;@7697bff6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:40:44,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 15:40:44,506 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-12 15:40:44,507 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 15:40:44,507 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:44,507 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:44,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:40:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:44,511 INFO L85 PathProgramCache]: Analyzing trace with hash -991814671, now seen corresponding path program 1 times [2022-12-12 15:40:44,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:44,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574491188] [2022-12-12 15:40:44,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:44,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:45,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574491188] [2022-12-12 15:40:45,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574491188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:45,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:45,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:40:45,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342859308] [2022-12-12 15:40:45,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:45,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:40:45,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:45,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:40:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:40:45,117 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-12 15:40:45,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:45,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:45,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-12 15:40:45,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:45,238 INFO L130 PetriNetUnfolder]: 40/96 cut-off events. [2022-12-12 15:40:45,238 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-12 15:40:45,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 96 events. 40/96 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 13 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 168. Up to 67 conditions per place. [2022-12-12 15:40:45,240 INFO L137 encePairwiseOnDemand]: 11/16 looper letters, 20 selfloop transitions, 3 changer transitions 14/37 dead transitions. [2022-12-12 15:40:45,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 184 flow [2022-12-12 15:40:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:40:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:40:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-12-12 15:40:45,249 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.475 [2022-12-12 15:40:45,250 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 38 transitions. [2022-12-12 15:40:45,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 184 flow [2022-12-12 15:40:45,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 15:40:45,255 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 67 flow [2022-12-12 15:40:45,256 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-12-12 15:40:45,258 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-12-12 15:40:45,258 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 67 flow [2022-12-12 15:40:45,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:45,259 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:45,259 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:45,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:40:45,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:40:45,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:45,266 INFO L85 PathProgramCache]: Analyzing trace with hash 937613143, now seen corresponding path program 2 times [2022-12-12 15:40:45,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:45,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15097258] [2022-12-12 15:40:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:45,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:45,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:45,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15097258] [2022-12-12 15:40:45,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15097258] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:45,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:45,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:40:45,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560252175] [2022-12-12 15:40:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:40:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:45,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:40:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:40:45,539 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-12 15:40:45,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 67 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:45,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:45,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-12 15:40:45,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:45,655 INFO L130 PetriNetUnfolder]: 31/79 cut-off events. [2022-12-12 15:40:45,655 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-12-12 15:40:45,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 79 events. 31/79 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 197 event pairs, 1 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 107. Up to 40 conditions per place. [2022-12-12 15:40:45,656 INFO L137 encePairwiseOnDemand]: 11/16 looper letters, 22 selfloop transitions, 4 changer transitions 15/41 dead transitions. [2022-12-12 15:40:45,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 218 flow [2022-12-12 15:40:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:40:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:40:45,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2022-12-12 15:40:45,658 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.525 [2022-12-12 15:40:45,658 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 67 flow. Second operand 5 states and 42 transitions. [2022-12-12 15:40:45,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 218 flow [2022-12-12 15:40:45,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 197 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-12 15:40:45,659 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 74 flow [2022-12-12 15:40:45,659 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-12-12 15:40:45,659 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2022-12-12 15:40:45,660 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 74 flow [2022-12-12 15:40:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:45,660 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:40:45,660 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:40:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:40:45,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 15:40:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:40:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -404368381, now seen corresponding path program 3 times [2022-12-12 15:40:45,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:40:45,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265884694] [2022-12-12 15:40:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:40:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:40:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:40:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 15:40:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:40:45,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265884694] [2022-12-12 15:40:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265884694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:40:45,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:40:45,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 15:40:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934682068] [2022-12-12 15:40:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:40:45,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:40:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:40:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:40:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:40:45,795 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-12 15:40:45,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 74 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:45,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:40:45,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-12 15:40:45,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:40:45,867 INFO L130 PetriNetUnfolder]: 17/49 cut-off events. [2022-12-12 15:40:45,867 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-12 15:40:45,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 49 events. 17/49 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 1 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 64. Up to 23 conditions per place. [2022-12-12 15:40:45,867 INFO L137 encePairwiseOnDemand]: 11/16 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2022-12-12 15:40:45,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 148 flow [2022-12-12 15:40:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:40:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:40:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-12-12 15:40:45,869 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35 [2022-12-12 15:40:45,869 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 74 flow. Second operand 5 states and 28 transitions. [2022-12-12 15:40:45,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 148 flow [2022-12-12 15:40:45,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 136 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-12 15:40:45,870 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2022-12-12 15:40:45,870 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2022-12-12 15:40:45,871 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2022-12-12 15:40:45,871 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2022-12-12 15:40:45,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 15:40:45,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 15:40:45,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 15:40:45,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 15:40:45,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 15:40:45,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:40:45,874 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2022-12-12 15:40:45,876 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 15:40:45,876 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 15:40:45,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 03:40:45 BasicIcfg [2022-12-12 15:40:45,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 15:40:45,878 INFO L158 Benchmark]: Toolchain (without parser) took 4361.88ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 150.9MB in the beginning and 118.2MB in the end (delta: 32.7MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. [2022-12-12 15:40:45,878 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 127.9MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:40:45,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.18ms. Allocated memory is still 175.1MB. Free memory was 150.5MB in the beginning and 139.4MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 15:40:45,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.00ms. Allocated memory is still 175.1MB. Free memory was 139.4MB in the beginning and 137.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 15:40:45,879 INFO L158 Benchmark]: Boogie Preprocessor took 24.26ms. Allocated memory is still 175.1MB. Free memory was 137.9MB in the beginning and 136.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 15:40:45,880 INFO L158 Benchmark]: RCFGBuilder took 326.87ms. Allocated memory is still 175.1MB. Free memory was 136.6MB in the beginning and 123.2MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 15:40:45,880 INFO L158 Benchmark]: TraceAbstraction took 3770.20ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 122.0MB in the beginning and 118.2MB in the end (delta: 3.8MB). Peak memory consumption was 40.5MB. Max. memory is 8.0GB. [2022-12-12 15:40:45,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 127.9MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.18ms. Allocated memory is still 175.1MB. Free memory was 150.5MB in the beginning and 139.4MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.00ms. Allocated memory is still 175.1MB. Free memory was 139.4MB in the beginning and 137.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.26ms. Allocated memory is still 175.1MB. Free memory was 137.9MB in the beginning and 136.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 326.87ms. Allocated memory is still 175.1MB. Free memory was 136.6MB in the beginning and 123.2MB in the end (delta: 13.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3770.20ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 122.0MB in the beginning and 118.2MB in the end (delta: 3.8MB). Peak memory consumption was 40.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 82 PlacesBefore, 26 PlacesAfterwards, 74 TransitionsBefore, 16 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 21 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 162, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 162, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 162, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 162, unknown conditional: 0, unknown unconditional: 162] , Statistics on independence cache: Total cache size (in pairs): 240, Positive cache size: 240, Positive conditional cache size: 0, Positive unconditional cache size: 240, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 284 IncrementalHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 15:40:45,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...