/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 02:39:08,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 02:39:08,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 02:39:08,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 02:39:08,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 02:39:08,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 02:39:08,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 02:39:08,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 02:39:08,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 02:39:08,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 02:39:08,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 02:39:08,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 02:39:08,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 02:39:08,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 02:39:08,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 02:39:08,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 02:39:08,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 02:39:08,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 02:39:08,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 02:39:08,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 02:39:08,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 02:39:08,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 02:39:08,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 02:39:08,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 02:39:08,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 02:39:08,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 02:39:08,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 02:39:08,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 02:39:08,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 02:39:08,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 02:39:08,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 02:39:08,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 02:39:08,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 02:39:08,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 02:39:08,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 02:39:08,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 02:39:08,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 02:39:08,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 02:39:08,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 02:39:08,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 02:39:08,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 02:39:08,908 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-19 02:39:08,932 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 02:39:08,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 02:39:08,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 02:39:08,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 02:39:08,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 02:39:08,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 02:39:08,933 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 02:39:08,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 02:39:08,934 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 02:39:08,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 02:39:08,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 02:39:08,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 02:39:08,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 02:39:08,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 02:39:08,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:39:08,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 02:39:08,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 02:39:08,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 02:39:08,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 02:39:08,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 02:39:08,936 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 02:39:08,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 02:39:08,936 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 02:39:09,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 02:39:09,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 02:39:09,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 02:39:09,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 02:39:09,141 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 02:39:09,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-01-19 02:39:09,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171c36efa/21a627ba202c4ab2bca218fef21fa756/FLAG15574be9b [2022-01-19 02:39:09,565 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 02:39:09,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-01-19 02:39:09,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171c36efa/21a627ba202c4ab2bca218fef21fa756/FLAG15574be9b [2022-01-19 02:39:09,588 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/171c36efa/21a627ba202c4ab2bca218fef21fa756 [2022-01-19 02:39:09,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 02:39:09,594 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 02:39:09,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 02:39:09,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 02:39:09,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 02:39:09,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2d8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09, skipping insertion in model container [2022-01-19 02:39:09,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 02:39:09,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 02:39:09,750 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-threaded-sum-3.wvr.c[2957,2970] [2022-01-19 02:39:09,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:39:09,758 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 02:39:09,790 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-threaded-sum-3.wvr.c[2957,2970] [2022-01-19 02:39:09,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 02:39:09,799 INFO L208 MainTranslator]: Completed translation [2022-01-19 02:39:09,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09 WrapperNode [2022-01-19 02:39:09,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 02:39:09,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 02:39:09,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 02:39:09,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 02:39:09,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,823 INFO L137 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-01-19 02:39:09,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 02:39:09,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 02:39:09,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 02:39:09,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 02:39:09,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 02:39:09,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 02:39:09,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 02:39:09,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 02:39:09,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (1/1) ... [2022-01-19 02:39:09,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 02:39:09,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:09,866 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) [2022-01-19 02:39:09,870 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 [2022-01-19 02:39:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 02:39:09,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 02:39:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 02:39:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 02:39:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 02:39:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 02:39:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 02:39:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 02:39:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 02:39:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 02:39:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 02:39:09,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 02:39:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 02:39:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 02:39:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 02:39:09,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 02:39:09,892 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 02:39:09,962 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 02:39:09,963 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 02:39:10,099 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 02:39:10,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 02:39:10,138 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 02:39:10,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:39:10 BoogieIcfgContainer [2022-01-19 02:39:10,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 02:39:10,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 02:39:10,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 02:39:10,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 02:39:10,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:39:09" (1/3) ... [2022-01-19 02:39:10,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd13e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:39:10, skipping insertion in model container [2022-01-19 02:39:10,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:39:09" (2/3) ... [2022-01-19 02:39:10,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd13e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:39:10, skipping insertion in model container [2022-01-19 02:39:10,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:39:10" (3/3) ... [2022-01-19 02:39:10,145 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2022-01-19 02:39:10,148 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 02:39:10,148 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 02:39:10,148 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 02:39:10,188 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,189 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,189 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,189 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,190 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,190 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,190 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,191 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,192 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,192 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,192 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,193 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,193 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,194 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,194 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,194 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,194 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,196 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,197 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,197 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,197 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,198 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,198 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,198 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,198 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,198 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,199 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,202 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,202 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,202 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,204 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,204 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,205 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,205 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,206 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,206 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,207 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,207 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 02:39:10,210 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 02:39:10,243 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 02:39:10,248 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 02:39:10,248 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 02:39:10,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 115 transitions, 254 flow [2022-01-19 02:39:10,294 INFO L129 PetriNetUnfolder]: 8/112 cut-off events. [2022-01-19 02:39:10,294 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:39:10,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 8/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-01-19 02:39:10,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 115 transitions, 254 flow [2022-01-19 02:39:10,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 101 transitions, 220 flow [2022-01-19 02:39:10,327 INFO L129 PetriNetUnfolder]: 8/100 cut-off events. [2022-01-19 02:39:10,327 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 02:39:10,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:10,328 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:10,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1016748740, now seen corresponding path program 1 times [2022-01-19 02:39:10,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:10,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78172072] [2022-01-19 02:39:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:10,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:11,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:11,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78172072] [2022-01-19 02:39:11,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78172072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:39:11,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:39:11,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 02:39:11,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146921056] [2022-01-19 02:39:11,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:39:11,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:39:11,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:11,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:39:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:39:11,103 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2022-01-19 02:39:11,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:11,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:11,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2022-01-19 02:39:11,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:11,501 INFO L129 PetriNetUnfolder]: 301/767 cut-off events. [2022-01-19 02:39:11,501 INFO L130 PetriNetUnfolder]: For 98/109 co-relation queries the response was YES. [2022-01-19 02:39:11,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 767 events. 301/767 cut-off events. For 98/109 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4077 event pairs, 77 based on Foata normal form. 89/756 useless extension candidates. Maximal degree in co-relation 1120. Up to 310 conditions per place. [2022-01-19 02:39:11,512 INFO L132 encePairwiseOnDemand]: 100/115 looper letters, 54 selfloop transitions, 11 changer transitions 2/123 dead transitions. [2022-01-19 02:39:11,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 416 flow [2022-01-19 02:39:11,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 02:39:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 02:39:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2022-01-19 02:39:11,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6891304347826087 [2022-01-19 02:39:11,524 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2022-01-19 02:39:11,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2022-01-19 02:39:11,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:11,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2022-01-19 02:39:11,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:11,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:11,536 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:11,537 INFO L186 Difference]: Start difference. First operand has 103 places, 101 transitions, 220 flow. Second operand 8 states and 634 transitions. [2022-01-19 02:39:11,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 416 flow [2022-01-19 02:39:11,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 123 transitions, 392 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 02:39:11,543 INFO L242 Difference]: Finished difference. Result has 107 places, 101 transitions, 260 flow [2022-01-19 02:39:11,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=260, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2022-01-19 02:39:11,546 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2022-01-19 02:39:11,547 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 260 flow [2022-01-19 02:39:11,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:11,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:11,551 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:11,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 02:39:11,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:11,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1082138286, now seen corresponding path program 1 times [2022-01-19 02:39:11,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:11,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589144823] [2022-01-19 02:39:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:11,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:11,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:11,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589144823] [2022-01-19 02:39:11,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589144823] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:11,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504405342] [2022-01-19 02:39:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:11,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:11,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:11,814 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) [2022-01-19 02:39:11,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 02:39:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 02:39:11,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:39:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:12,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 02:39:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:12,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504405342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 02:39:12,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 02:39:12,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 19 [2022-01-19 02:39:12,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710045900] [2022-01-19 02:39:12,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 02:39:12,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 02:39:12,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 02:39:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-19 02:39:12,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 115 [2022-01-19 02:39:12,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 260 flow. Second operand has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:12,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:12,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 115 [2022-01-19 02:39:12,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:12,972 INFO L129 PetriNetUnfolder]: 467/1001 cut-off events. [2022-01-19 02:39:12,972 INFO L130 PetriNetUnfolder]: For 497/516 co-relation queries the response was YES. [2022-01-19 02:39:12,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1001 events. 467/1001 cut-off events. For 497/516 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5058 event pairs, 13 based on Foata normal form. 43/980 useless extension candidates. Maximal degree in co-relation 1684. Up to 227 conditions per place. [2022-01-19 02:39:12,980 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 77 selfloop transitions, 25 changer transitions 0/159 dead transitions. [2022-01-19 02:39:12,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 159 transitions, 655 flow [2022-01-19 02:39:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 02:39:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 02:39:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1079 transitions. [2022-01-19 02:39:12,983 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6701863354037267 [2022-01-19 02:39:12,983 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1079 transitions. [2022-01-19 02:39:12,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1079 transitions. [2022-01-19 02:39:12,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:12,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1079 transitions. [2022-01-19 02:39:12,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 77.07142857142857) internal successors, (1079), 14 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:12,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:12,990 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:12,990 INFO L186 Difference]: Start difference. First operand has 107 places, 101 transitions, 260 flow. Second operand 14 states and 1079 transitions. [2022-01-19 02:39:12,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 159 transitions, 655 flow [2022-01-19 02:39:12,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 02:39:12,996 INFO L242 Difference]: Finished difference. Result has 121 places, 113 transitions, 408 flow [2022-01-19 02:39:12,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=408, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2022-01-19 02:39:12,997 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 18 predicate places. [2022-01-19 02:39:12,997 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 408 flow [2022-01-19 02:39:12,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:12,998 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:12,998 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:13,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 02:39:13,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:13,215 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -958633325, now seen corresponding path program 1 times [2022-01-19 02:39:13,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:13,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706662750] [2022-01-19 02:39:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:13,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:13,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:13,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706662750] [2022-01-19 02:39:13,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706662750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:39:13,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:39:13,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 02:39:13,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075294206] [2022-01-19 02:39:13,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:39:13,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:39:13,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:39:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:39:13,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-01-19 02:39:13,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:13,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:13,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-01-19 02:39:13,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:14,094 INFO L129 PetriNetUnfolder]: 2345/4747 cut-off events. [2022-01-19 02:39:14,095 INFO L130 PetriNetUnfolder]: For 9265/9268 co-relation queries the response was YES. [2022-01-19 02:39:14,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14428 conditions, 4747 events. 2345/4747 cut-off events. For 9265/9268 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 34780 event pairs, 160 based on Foata normal form. 1/4287 useless extension candidates. Maximal degree in co-relation 12058. Up to 1093 conditions per place. [2022-01-19 02:39:14,126 INFO L132 encePairwiseOnDemand]: 102/115 looper letters, 177 selfloop transitions, 105 changer transitions 0/350 dead transitions. [2022-01-19 02:39:14,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 350 transitions, 2451 flow [2022-01-19 02:39:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 02:39:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 02:39:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2022-01-19 02:39:14,130 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8254658385093168 [2022-01-19 02:39:14,130 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2022-01-19 02:39:14,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2022-01-19 02:39:14,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:14,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2022-01-19 02:39:14,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,135 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,135 INFO L186 Difference]: Start difference. First operand has 121 places, 113 transitions, 408 flow. Second operand 14 states and 1329 transitions. [2022-01-19 02:39:14,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 350 transitions, 2451 flow [2022-01-19 02:39:14,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 350 transitions, 2311 flow, removed 61 selfloop flow, removed 6 redundant places. [2022-01-19 02:39:14,158 INFO L242 Difference]: Finished difference. Result has 139 places, 226 transitions, 1697 flow [2022-01-19 02:39:14,159 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1697, PETRI_PLACES=139, PETRI_TRANSITIONS=226} [2022-01-19 02:39:14,160 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 36 predicate places. [2022-01-19 02:39:14,160 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 226 transitions, 1697 flow [2022-01-19 02:39:14,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,162 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:14,162 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:14,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 02:39:14,162 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:14,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:14,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1199619273, now seen corresponding path program 2 times [2022-01-19 02:39:14,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:14,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951955302] [2022-01-19 02:39:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:14,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:14,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:14,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:14,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951955302] [2022-01-19 02:39:14,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951955302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:39:14,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:39:14,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 02:39:14,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624344077] [2022-01-19 02:39:14,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:39:14,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:39:14,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:14,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:39:14,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:39:14,385 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2022-01-19 02:39:14,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 226 transitions, 1697 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:14,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2022-01-19 02:39:14,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:14,849 INFO L129 PetriNetUnfolder]: 1521/3597 cut-off events. [2022-01-19 02:39:14,849 INFO L130 PetriNetUnfolder]: For 24796/25093 co-relation queries the response was YES. [2022-01-19 02:39:14,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16497 conditions, 3597 events. 1521/3597 cut-off events. For 24796/25093 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28255 event pairs, 138 based on Foata normal form. 85/3442 useless extension candidates. Maximal degree in co-relation 13499. Up to 1192 conditions per place. [2022-01-19 02:39:14,882 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 229 selfloop transitions, 64 changer transitions 0/363 dead transitions. [2022-01-19 02:39:14,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 363 transitions, 3794 flow [2022-01-19 02:39:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 02:39:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 02:39:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 655 transitions. [2022-01-19 02:39:14,884 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7119565217391305 [2022-01-19 02:39:14,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 655 transitions. [2022-01-19 02:39:14,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 655 transitions. [2022-01-19 02:39:14,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:14,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 655 transitions. [2022-01-19 02:39:14,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.875) internal successors, (655), 8 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,886 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,887 INFO L186 Difference]: Start difference. First operand has 139 places, 226 transitions, 1697 flow. Second operand 8 states and 655 transitions. [2022-01-19 02:39:14,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 363 transitions, 3794 flow [2022-01-19 02:39:14,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 363 transitions, 3592 flow, removed 101 selfloop flow, removed 0 redundant places. [2022-01-19 02:39:14,926 INFO L242 Difference]: Finished difference. Result has 149 places, 269 transitions, 2403 flow [2022-01-19 02:39:14,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2403, PETRI_PLACES=149, PETRI_TRANSITIONS=269} [2022-01-19 02:39:14,927 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 46 predicate places. [2022-01-19 02:39:14,927 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 269 transitions, 2403 flow [2022-01-19 02:39:14,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:14,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:14,928 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:14,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 02:39:14,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:14,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 82552129, now seen corresponding path program 1 times [2022-01-19 02:39:14,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:14,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995804913] [2022-01-19 02:39:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:14,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:15,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:15,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995804913] [2022-01-19 02:39:15,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995804913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:39:15,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:39:15,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 02:39:15,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817862443] [2022-01-19 02:39:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:39:15,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 02:39:15,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:15,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 02:39:15,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 02:39:15,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2022-01-19 02:39:15,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 269 transitions, 2403 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:15,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:15,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2022-01-19 02:39:15,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:16,856 INFO L129 PetriNetUnfolder]: 7039/14185 cut-off events. [2022-01-19 02:39:16,856 INFO L130 PetriNetUnfolder]: For 107585/107721 co-relation queries the response was YES. [2022-01-19 02:39:16,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65272 conditions, 14185 events. 7039/14185 cut-off events. For 107585/107721 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 124460 event pairs, 725 based on Foata normal form. 165/13643 useless extension candidates. Maximal degree in co-relation 55465. Up to 3064 conditions per place. [2022-01-19 02:39:17,025 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 330 selfloop transitions, 195 changer transitions 0/595 dead transitions. [2022-01-19 02:39:17,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 595 transitions, 7400 flow [2022-01-19 02:39:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 02:39:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 02:39:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1455 transitions. [2022-01-19 02:39:17,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2022-01-19 02:39:17,028 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1455 transitions. [2022-01-19 02:39:17,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1455 transitions. [2022-01-19 02:39:17,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:17,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1455 transitions. [2022-01-19 02:39:17,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:17,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:17,034 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:17,034 INFO L186 Difference]: Start difference. First operand has 149 places, 269 transitions, 2403 flow. Second operand 15 states and 1455 transitions. [2022-01-19 02:39:17,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 595 transitions, 7400 flow [2022-01-19 02:39:17,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 595 transitions, 7259 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-01-19 02:39:17,221 INFO L242 Difference]: Finished difference. Result has 171 places, 413 transitions, 5270 flow [2022-01-19 02:39:17,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5270, PETRI_PLACES=171, PETRI_TRANSITIONS=413} [2022-01-19 02:39:17,222 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 68 predicate places. [2022-01-19 02:39:17,222 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 413 transitions, 5270 flow [2022-01-19 02:39:17,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:17,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:17,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:17,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 02:39:17,223 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 393902587, now seen corresponding path program 2 times [2022-01-19 02:39:17,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:17,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947289906] [2022-01-19 02:39:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:17,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:17,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:17,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947289906] [2022-01-19 02:39:17,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947289906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:39:17,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 02:39:17,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 02:39:17,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297159401] [2022-01-19 02:39:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:39:17,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 02:39:17,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 02:39:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 02:39:17,296 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2022-01-19 02:39:17,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 413 transitions, 5270 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:17,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:17,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2022-01-19 02:39:17,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:19,294 INFO L129 PetriNetUnfolder]: 7953/14769 cut-off events. [2022-01-19 02:39:19,294 INFO L130 PetriNetUnfolder]: For 180952/181184 co-relation queries the response was YES. [2022-01-19 02:39:19,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84549 conditions, 14769 events. 7953/14769 cut-off events. For 180952/181184 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 124086 event pairs, 2073 based on Foata normal form. 27/13880 useless extension candidates. Maximal degree in co-relation 72609. Up to 9122 conditions per place. [2022-01-19 02:39:19,542 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 369 selfloop transitions, 99 changer transitions 9/557 dead transitions. [2022-01-19 02:39:19,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 557 transitions, 8362 flow [2022-01-19 02:39:19,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 02:39:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 02:39:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2022-01-19 02:39:19,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-19 02:39:19,545 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2022-01-19 02:39:19,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2022-01-19 02:39:19,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:19,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2022-01-19 02:39:19,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:19,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:19,547 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:19,547 INFO L186 Difference]: Start difference. First operand has 171 places, 413 transitions, 5270 flow. Second operand 6 states and 575 transitions. [2022-01-19 02:39:19,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 557 transitions, 8362 flow [2022-01-19 02:39:20,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 557 transitions, 8026 flow, removed 168 selfloop flow, removed 0 redundant places. [2022-01-19 02:39:20,083 INFO L242 Difference]: Finished difference. Result has 180 places, 443 transitions, 5809 flow [2022-01-19 02:39:20,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5809, PETRI_PLACES=180, PETRI_TRANSITIONS=443} [2022-01-19 02:39:20,084 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 77 predicate places. [2022-01-19 02:39:20,084 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 443 transitions, 5809 flow [2022-01-19 02:39:20,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:20,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:20,084 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:20,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 02:39:20,085 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:20,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1596044119, now seen corresponding path program 3 times [2022-01-19 02:39:20,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:20,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788143797] [2022-01-19 02:39:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:20,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:20,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:20,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788143797] [2022-01-19 02:39:20,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788143797] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:20,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846987738] [2022-01-19 02:39:20,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 02:39:20,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:20,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:20,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:39:20,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 02:39:20,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-19 02:39:20,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:39:20,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 02:39:20,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 02:39:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:20,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 02:39:20,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846987738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 02:39:20,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 02:39:20,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2022-01-19 02:39:20,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436176869] [2022-01-19 02:39:20,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 02:39:20,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 02:39:20,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 02:39:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 02:39:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-01-19 02:39:20,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 115 [2022-01-19 02:39:20,594 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 443 transitions, 5809 flow. Second operand has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:20,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 02:39:20,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 115 [2022-01-19 02:39:20,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 02:39:23,556 INFO L129 PetriNetUnfolder]: 10546/18925 cut-off events. [2022-01-19 02:39:23,556 INFO L130 PetriNetUnfolder]: For 257457/257799 co-relation queries the response was YES. [2022-01-19 02:39:23,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115658 conditions, 18925 events. 10546/18925 cut-off events. For 257457/257799 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 159996 event pairs, 2288 based on Foata normal form. 576/19283 useless extension candidates. Maximal degree in co-relation 101677. Up to 10517 conditions per place. [2022-01-19 02:39:23,747 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 607 selfloop transitions, 107 changer transitions 3/785 dead transitions. [2022-01-19 02:39:23,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 785 transitions, 12170 flow [2022-01-19 02:39:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 02:39:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 02:39:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1032 transitions. [2022-01-19 02:39:23,754 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6903010033444816 [2022-01-19 02:39:23,754 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1032 transitions. [2022-01-19 02:39:23,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1032 transitions. [2022-01-19 02:39:23,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 02:39:23,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1032 transitions. [2022-01-19 02:39:23,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.38461538461539) internal successors, (1032), 13 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:23,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:23,758 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:23,758 INFO L186 Difference]: Start difference. First operand has 180 places, 443 transitions, 5809 flow. Second operand 13 states and 1032 transitions. [2022-01-19 02:39:23,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 785 transitions, 12170 flow [2022-01-19 02:39:24,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 785 transitions, 11943 flow, removed 26 selfloop flow, removed 1 redundant places. [2022-01-19 02:39:24,492 INFO L242 Difference]: Finished difference. Result has 198 places, 511 transitions, 6996 flow [2022-01-19 02:39:24,493 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6996, PETRI_PLACES=198, PETRI_TRANSITIONS=511} [2022-01-19 02:39:24,493 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 95 predicate places. [2022-01-19 02:39:24,494 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 511 transitions, 6996 flow [2022-01-19 02:39:24,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 02:39:24,494 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 02:39:24,494 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 02:39:24,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 02:39:24,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 02:39:24,695 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 02:39:24,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 02:39:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash 209813985, now seen corresponding path program 4 times [2022-01-19 02:39:24,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 02:39:24,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313326118] [2022-01-19 02:39:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 02:39:24,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 02:39:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 02:39:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 02:39:26,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 02:39:26,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313326118] [2022-01-19 02:39:26,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313326118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 02:39:26,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921846058] [2022-01-19 02:39:26,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 02:39:26,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:39:26,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 02:39:26,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 02:39:26,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 02:39:26,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 02:39:26,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 02:39:26,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-19 02:39:26,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-01-19 02:53:40,043 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 02:53:40,043 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 02:53:40,055 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 02:53:40,057 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 02:53:40,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-19 02:53:40,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 02:53:40,260 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 64ms.. [2022-01-19 02:53:40,261 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 02:53:40,261 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 02:53:40,261 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 02:53:40,264 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1] [2022-01-19 02:53:40,266 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 02:53:40,266 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 02:53:40,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:53:40 BasicIcfg [2022-01-19 02:53:40,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 02:53:40,274 INFO L158 Benchmark]: Toolchain (without parser) took 870679.42ms. Allocated memory was 392.2MB in the beginning and 6.1GB in the end (delta: 5.7GB). Free memory was 338.4MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2022-01-19 02:53:40,274 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 392.2MB. Free memory is still 355.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:53:40,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.51ms. Allocated memory was 392.2MB in the beginning and 471.9MB in the end (delta: 79.7MB). Free memory was 338.1MB in the beginning and 444.9MB in the end (delta: -106.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. [2022-01-19 02:53:40,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.08ms. Allocated memory is still 471.9MB. Free memory was 444.9MB in the beginning and 442.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 02:53:40,276 INFO L158 Benchmark]: Boogie Preprocessor took 16.39ms. Allocated memory is still 471.9MB. Free memory was 442.8MB in the beginning and 441.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 02:53:40,277 INFO L158 Benchmark]: RCFGBuilder took 298.82ms. Allocated memory is still 471.9MB. Free memory was 441.8MB in the beginning and 423.9MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 02:53:40,277 INFO L158 Benchmark]: TraceAbstraction took 870132.86ms. Allocated memory was 471.9MB in the beginning and 6.1GB in the end (delta: 5.6GB). Free memory was 422.9MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2022-01-19 02:53:40,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 392.2MB. Free memory is still 355.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 204.51ms. Allocated memory was 392.2MB in the beginning and 471.9MB in the end (delta: 79.7MB). Free memory was 338.1MB in the beginning and 444.9MB in the end (delta: -106.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.08ms. Allocated memory is still 471.9MB. Free memory was 444.9MB in the beginning and 442.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.39ms. Allocated memory is still 471.9MB. Free memory was 442.8MB in the beginning and 441.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 298.82ms. Allocated memory is still 471.9MB. Free memory was 441.8MB in the beginning and 423.9MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 870132.86ms. Allocated memory was 471.9MB in the beginning and 6.1GB in the end (delta: 5.6GB). Free memory was 422.9MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 64ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 64ms.. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 64ms.. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 64ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 133 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: 870.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 725 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 725 mSDsluCounter, 447 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 642 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 133 mSDtfsCounter, 1480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6996occurred in iteration=7, InterpolantAutomatonStates: 78, 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, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 4680 SizeOfPredicates, 23 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 9/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown