/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/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-18 22:51:59,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 22:51:59,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 22:51:59,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 22:51:59,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 22:51:59,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 22:51:59,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 22:51:59,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 22:51:59,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 22:51:59,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 22:51:59,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 22:51:59,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 22:51:59,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 22:51:59,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 22:51:59,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 22:51:59,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 22:51:59,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 22:51:59,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 22:51:59,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 22:51:59,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 22:51:59,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 22:51:59,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 22:51:59,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 22:51:59,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 22:51:59,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 22:51:59,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 22:51:59,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 22:51:59,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 22:51:59,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 22:51:59,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-18 22:51:59,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 22:51:59,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 22:51:59,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 22:51:59,073 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 [2022-01-18 22:51:59,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 22:51:59,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 22:51:59,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 22:51:59,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 22:51:59,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 22:51:59,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 22:51:59,088 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 22:51:59,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 22:51:59,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 22:51:59,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 22:51:59,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 22:51:59,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 22:51:59,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 22:51:59,089 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:51:59,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 22:51:59,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-18 22:51:59,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 22:51:59,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 22:51:59,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 22:51:59,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 22:51:59,288 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 22:51:59,289 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 22:51:59,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:51:59,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15f975fb1/3b758d4496064d1cb4378e86d7173335/FLAGc6acba267 [2022-01-18 22:51:59,798 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 22:51:59,799 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:51:59,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15f975fb1/3b758d4496064d1cb4378e86d7173335/FLAGc6acba267 [2022-01-18 22:52:00,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15f975fb1/3b758d4496064d1cb4378e86d7173335 [2022-01-18 22:52:00,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 22:52:00,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 22:52:00,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 22:52:00,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 22:52:00,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 22:52:00,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ffe9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00, skipping insertion in model container [2022-01-18 22:52:00,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 22:52:00,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 22:52:00,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 22:52:00,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:52:00,373 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 22:52:00,379 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-01-18 22:52:00,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 22:52:00,439 INFO L208 MainTranslator]: Completed translation [2022-01-18 22:52:00,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00 WrapperNode [2022-01-18 22:52:00,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 22:52:00,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 22:52:00,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 22:52:00,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 22:52:00,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,490 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-01-18 22:52:00,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 22:52:00,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 22:52:00,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 22:52:00,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 22:52:00,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 22:52:00,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 22:52:00,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 22:52:00,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 22:52:00,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (1/1) ... [2022-01-18 22:52:00,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 22:52:00,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 22:52:00,593 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) [2022-01-18 22:52:00,647 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 [2022-01-18 22:52:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 22:52:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 22:52:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 22:52:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 22:52:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 22:52:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-18 22:52:00,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-18 22:52:00,669 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-18 22:52:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-18 22:52:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-18 22:52:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-18 22:52:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 22:52:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 22:52:00,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 22:52:00,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 22:52:00,671 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 22:52:00,781 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 22:52:00,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 22:52:00,882 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 22:52:00,886 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 22:52:00,886 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 22:52:00,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:52:00 BoogieIcfgContainer [2022-01-18 22:52:00,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 22:52:00,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 22:52:00,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 22:52:00,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 22:52:00,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 10:52:00" (1/3) ... [2022-01-18 22:52:00,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5761f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:52:00, skipping insertion in model container [2022-01-18 22:52:00,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 10:52:00" (2/3) ... [2022-01-18 22:52:00,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5761f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 10:52:00, skipping insertion in model container [2022-01-18 22:52:00,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 10:52:00" (3/3) ... [2022-01-18 22:52:00,895 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-01-18 22:52:00,898 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 22:52:00,899 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 22:52:00,899 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 22:52:00,938 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,939 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,939 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,940 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,940 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,940 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,940 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,940 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,941 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,941 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,941 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,941 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,942 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,942 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,942 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,942 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,942 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,943 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,943 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,943 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,943 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,943 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,943 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,944 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,944 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,944 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,944 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,944 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,945 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,945 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,945 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,945 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,945 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,946 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,946 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,946 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,949 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,949 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,949 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,949 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,964 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,964 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,964 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,965 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,965 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,966 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,966 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,966 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 22:52:00,966 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 22:52:01,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 22:52:01,010 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 [2022-01-18 22:52:01,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 22:52:01,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2022-01-18 22:52:01,051 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2022-01-18 22:52:01,052 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:52:01,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2022-01-18 22:52:01,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2022-01-18 22:52:01,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2022-01-18 22:52:01,077 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2022-01-18 22:52:01,077 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-18 22:52:01,077 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:01,078 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] [2022-01-18 22:52:01,078 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash -36302498, now seen corresponding path program 1 times [2022-01-18 22:52:01,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:01,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757740168] [2022-01-18 22:52:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:01,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:01,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:01,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757740168] [2022-01-18 22:52:01,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757740168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:01,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:01,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:01,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126988148] [2022-01-18 22:52:01,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:01,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:01,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:01,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:01,505 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-01-18 22:52:01,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:01,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:01,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-01-18 22:52:01,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:01,832 INFO L129 PetriNetUnfolder]: 91/333 cut-off events. [2022-01-18 22:52:01,832 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-18 22:52:01,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 333 events. 91/333 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1486 event pairs, 14 based on Foata normal form. 14/334 useless extension candidates. Maximal degree in co-relation 512. Up to 60 conditions per place. [2022-01-18 22:52:01,835 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 19 selfloop transitions, 5 changer transitions 35/115 dead transitions. [2022-01-18 22:52:01,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 357 flow [2022-01-18 22:52:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:52:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:52:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2022-01-18 22:52:01,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-18 22:52:01,849 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2022-01-18 22:52:01,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2022-01-18 22:52:01,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:01,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2022-01-18 22:52:01,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:01,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:01,879 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:01,881 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 975 transitions. [2022-01-18 22:52:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 357 flow [2022-01-18 22:52:01,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-18 22:52:01,894 INFO L242 Difference]: Finished difference. Result has 102 places, 74 transitions, 207 flow [2022-01-18 22:52:01,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=207, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2022-01-18 22:52:01,901 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2022-01-18 22:52:01,901 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 207 flow [2022-01-18 22:52:01,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:01,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:01,902 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] [2022-01-18 22:52:01,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 22:52:01,903 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash -530472705, now seen corresponding path program 1 times [2022-01-18 22:52:01,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:01,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754077351] [2022-01-18 22:52:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:01,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:02,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:02,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754077351] [2022-01-18 22:52:02,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754077351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:02,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:02,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:02,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760186312] [2022-01-18 22:52:02,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:02,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:02,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:02,123 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2022-01-18 22:52:02,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:02,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2022-01-18 22:52:02,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:02,383 INFO L129 PetriNetUnfolder]: 55/305 cut-off events. [2022-01-18 22:52:02,384 INFO L130 PetriNetUnfolder]: For 479/506 co-relation queries the response was YES. [2022-01-18 22:52:02,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 305 events. 55/305 cut-off events. For 479/506 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1371 event pairs, 13 based on Foata normal form. 10/307 useless extension candidates. Maximal degree in co-relation 723. Up to 54 conditions per place. [2022-01-18 22:52:02,390 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 19 selfloop transitions, 7 changer transitions 28/110 dead transitions. [2022-01-18 22:52:02,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 539 flow [2022-01-18 22:52:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:52:02,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:52:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2022-01-18 22:52:02,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8264957264957264 [2022-01-18 22:52:02,396 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2022-01-18 22:52:02,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2022-01-18 22:52:02,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:02,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2022-01-18 22:52:02,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,403 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,403 INFO L186 Difference]: Start difference. First operand has 102 places, 74 transitions, 207 flow. Second operand 13 states and 967 transitions. [2022-01-18 22:52:02,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 110 transitions, 539 flow [2022-01-18 22:52:02,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 110 transitions, 461 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-01-18 22:52:02,410 INFO L242 Difference]: Finished difference. Result has 107 places, 75 transitions, 227 flow [2022-01-18 22:52:02,410 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=227, PETRI_PLACES=107, PETRI_TRANSITIONS=75} [2022-01-18 22:52:02,411 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2022-01-18 22:52:02,411 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 75 transitions, 227 flow [2022-01-18 22:52:02,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,411 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:02,411 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] [2022-01-18 22:52:02,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 22:52:02,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1936563584, now seen corresponding path program 1 times [2022-01-18 22:52:02,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:02,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592049526] [2022-01-18 22:52:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:02,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:02,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592049526] [2022-01-18 22:52:02,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592049526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:02,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:02,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:02,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415949616] [2022-01-18 22:52:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:02,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:02,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:02,512 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2022-01-18 22:52:02,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 75 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:02,513 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2022-01-18 22:52:02,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:02,649 INFO L129 PetriNetUnfolder]: 68/311 cut-off events. [2022-01-18 22:52:02,650 INFO L130 PetriNetUnfolder]: For 700/802 co-relation queries the response was YES. [2022-01-18 22:52:02,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 311 events. 68/311 cut-off events. For 700/802 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1418 event pairs, 8 based on Foata normal form. 11/308 useless extension candidates. Maximal degree in co-relation 804. Up to 69 conditions per place. [2022-01-18 22:52:02,651 INFO L132 encePairwiseOnDemand]: 82/90 looper letters, 14 selfloop transitions, 4 changer transitions 26/104 dead transitions. [2022-01-18 22:52:02,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 104 transitions, 516 flow [2022-01-18 22:52:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 757 transitions. [2022-01-18 22:52:02,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8411111111111111 [2022-01-18 22:52:02,654 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 757 transitions. [2022-01-18 22:52:02,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 757 transitions. [2022-01-18 22:52:02,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:02,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 757 transitions. [2022-01-18 22:52:02,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.7) internal successors, (757), 10 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,657 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,657 INFO L186 Difference]: Start difference. First operand has 107 places, 75 transitions, 227 flow. Second operand 10 states and 757 transitions. [2022-01-18 22:52:02,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 104 transitions, 516 flow [2022-01-18 22:52:02,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 454 flow, removed 24 selfloop flow, removed 10 redundant places. [2022-01-18 22:52:02,663 INFO L242 Difference]: Finished difference. Result has 105 places, 75 transitions, 227 flow [2022-01-18 22:52:02,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=227, PETRI_PLACES=105, PETRI_TRANSITIONS=75} [2022-01-18 22:52:02,665 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 23 predicate places. [2022-01-18 22:52:02,665 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 75 transitions, 227 flow [2022-01-18 22:52:02,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:02,665 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] [2022-01-18 22:52:02,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 22:52:02,666 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:02,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:02,669 INFO L85 PathProgramCache]: Analyzing trace with hash -270087491, now seen corresponding path program 1 times [2022-01-18 22:52:02,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:02,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928416255] [2022-01-18 22:52:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:02,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:02,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928416255] [2022-01-18 22:52:02,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928416255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:02,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:02,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 22:52:02,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765947650] [2022-01-18 22:52:02,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:02,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 22:52:02,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:02,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 22:52:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 22:52:02,783 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-18 22:52:02,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 75 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:02,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-18 22:52:02,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:02,909 INFO L129 PetriNetUnfolder]: 277/753 cut-off events. [2022-01-18 22:52:02,909 INFO L130 PetriNetUnfolder]: For 386/395 co-relation queries the response was YES. [2022-01-18 22:52:02,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 753 events. 277/753 cut-off events. For 386/395 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4850 event pairs, 11 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 1488. Up to 193 conditions per place. [2022-01-18 22:52:02,914 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 15 changer transitions 5/107 dead transitions. [2022-01-18 22:52:02,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 387 flow [2022-01-18 22:52:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 22:52:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-18 22:52:02,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-01-18 22:52:02,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8644444444444445 [2022-01-18 22:52:02,916 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-01-18 22:52:02,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-01-18 22:52:02,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:02,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-01-18 22:52:02,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,919 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,919 INFO L186 Difference]: Start difference. First operand has 105 places, 75 transitions, 227 flow. Second operand 10 states and 778 transitions. [2022-01-18 22:52:02,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 387 flow [2022-01-18 22:52:02,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 361 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-01-18 22:52:02,925 INFO L242 Difference]: Finished difference. Result has 104 places, 88 transitions, 310 flow [2022-01-18 22:52:02,925 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2022-01-18 22:52:02,926 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 22 predicate places. [2022-01-18 22:52:02,926 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 310 flow [2022-01-18 22:52:02,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,928 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:02,928 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] [2022-01-18 22:52:02,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 22:52:02,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:02,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2098741817, now seen corresponding path program 1 times [2022-01-18 22:52:02,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:02,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002059190] [2022-01-18 22:52:02,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:02,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:02,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:02,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002059190] [2022-01-18 22:52:02,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002059190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:02,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:02,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:02,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355645729] [2022-01-18 22:52:02,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:02,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:02,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:02,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-18 22:52:02,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:02,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:02,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-18 22:52:02,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:03,139 INFO L129 PetriNetUnfolder]: 255/704 cut-off events. [2022-01-18 22:52:03,139 INFO L130 PetriNetUnfolder]: For 1608/1867 co-relation queries the response was YES. [2022-01-18 22:52:03,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 704 events. 255/704 cut-off events. For 1608/1867 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4614 event pairs, 0 based on Foata normal form. 44/703 useless extension candidates. Maximal degree in co-relation 2295. Up to 277 conditions per place. [2022-01-18 22:52:03,143 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 26 selfloop transitions, 28 changer transitions 11/126 dead transitions. [2022-01-18 22:52:03,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 126 transitions, 676 flow [2022-01-18 22:52:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 22:52:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-18 22:52:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1010 transitions. [2022-01-18 22:52:03,145 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8632478632478633 [2022-01-18 22:52:03,145 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1010 transitions. [2022-01-18 22:52:03,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1010 transitions. [2022-01-18 22:52:03,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:03,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1010 transitions. [2022-01-18 22:52:03,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.6923076923077) internal successors, (1010), 13 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,150 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,150 INFO L186 Difference]: Start difference. First operand has 104 places, 88 transitions, 310 flow. Second operand 13 states and 1010 transitions. [2022-01-18 22:52:03,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 126 transitions, 676 flow [2022-01-18 22:52:03,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 126 transitions, 669 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-18 22:52:03,153 INFO L242 Difference]: Finished difference. Result has 120 places, 105 transitions, 529 flow [2022-01-18 22:52:03,153 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=529, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2022-01-18 22:52:03,154 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 38 predicate places. [2022-01-18 22:52:03,154 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 529 flow [2022-01-18 22:52:03,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,154 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:03,155 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] [2022-01-18 22:52:03,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 22:52:03,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:03,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1245687000, now seen corresponding path program 1 times [2022-01-18 22:52:03,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:03,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571522258] [2022-01-18 22:52:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:03,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:03,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:03,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571522258] [2022-01-18 22:52:03,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571522258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:03,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:03,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 22:52:03,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541570040] [2022-01-18 22:52:03,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:03,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 22:52:03,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 22:52:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 22:52:03,241 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2022-01-18 22:52:03,242 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 529 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,242 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:03,242 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2022-01-18 22:52:03,242 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:03,439 INFO L129 PetriNetUnfolder]: 175/585 cut-off events. [2022-01-18 22:52:03,440 INFO L130 PetriNetUnfolder]: For 2675/3121 co-relation queries the response was YES. [2022-01-18 22:52:03,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 585 events. 175/585 cut-off events. For 2675/3121 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4055 event pairs, 0 based on Foata normal form. 49/597 useless extension candidates. Maximal degree in co-relation 2415. Up to 201 conditions per place. [2022-01-18 22:52:03,444 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 20 selfloop transitions, 32 changer transitions 21/134 dead transitions. [2022-01-18 22:52:03,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 134 transitions, 869 flow [2022-01-18 22:52:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 22:52:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-18 22:52:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1226 transitions. [2022-01-18 22:52:03,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8513888888888889 [2022-01-18 22:52:03,447 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1226 transitions. [2022-01-18 22:52:03,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1226 transitions. [2022-01-18 22:52:03,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:03,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1226 transitions. [2022-01-18 22:52:03,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 76.625) internal successors, (1226), 16 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,452 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 90.0) internal successors, (1530), 17 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,452 INFO L186 Difference]: Start difference. First operand has 120 places, 105 transitions, 529 flow. Second operand 16 states and 1226 transitions. [2022-01-18 22:52:03,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 134 transitions, 869 flow [2022-01-18 22:52:03,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 785 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-01-18 22:52:03,466 INFO L242 Difference]: Finished difference. Result has 134 places, 106 transitions, 559 flow [2022-01-18 22:52:03,467 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=559, PETRI_PLACES=134, PETRI_TRANSITIONS=106} [2022-01-18 22:52:03,468 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 52 predicate places. [2022-01-18 22:52:03,469 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 106 transitions, 559 flow [2022-01-18 22:52:03,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-18 22:52:03,469 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] [2022-01-18 22:52:03,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 22:52:03,470 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 22:52:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 22:52:03,470 INFO L85 PathProgramCache]: Analyzing trace with hash 940364757, now seen corresponding path program 1 times [2022-01-18 22:52:03,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 22:52:03,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075965069] [2022-01-18 22:52:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 22:52:03,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 22:52:03,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 22:52:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 22:52:03,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 22:52:03,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075965069] [2022-01-18 22:52:03,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075965069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 22:52:03,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 22:52:03,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 22:52:03,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998830089] [2022-01-18 22:52:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 22:52:03,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 22:52:03,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 22:52:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 22:52:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 22:52:03,562 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 90 [2022-01-18 22:52:03,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 106 transitions, 559 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-18 22:52:03,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 90 [2022-01-18 22:52:03,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-18 22:52:03,650 INFO L129 PetriNetUnfolder]: 126/671 cut-off events. [2022-01-18 22:52:03,650 INFO L130 PetriNetUnfolder]: For 1895/1941 co-relation queries the response was YES. [2022-01-18 22:52:03,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 671 events. 126/671 cut-off events. For 1895/1941 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5458 event pairs, 2 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 2118. Up to 95 conditions per place. [2022-01-18 22:52:03,656 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2022-01-18 22:52:03,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 108 transitions, 606 flow [2022-01-18 22:52:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 22:52:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-18 22:52:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 522 transitions. [2022-01-18 22:52:03,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-01-18 22:52:03,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 522 transitions. [2022-01-18 22:52:03,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 522 transitions. [2022-01-18 22:52:03,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-18 22:52:03,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 522 transitions. [2022-01-18 22:52:03,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,660 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,660 INFO L186 Difference]: Start difference. First operand has 134 places, 106 transitions, 559 flow. Second operand 7 states and 522 transitions. [2022-01-18 22:52:03,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 108 transitions, 606 flow [2022-01-18 22:52:03,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 108 transitions, 509 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-01-18 22:52:03,672 INFO L242 Difference]: Finished difference. Result has 120 places, 0 transitions, 0 flow [2022-01-18 22:52:03,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=120, PETRI_TRANSITIONS=0} [2022-01-18 22:52:03,673 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 38 predicate places. [2022-01-18 22:52:03,673 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 0 transitions, 0 flow [2022-01-18 22:52:03,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 22:52:03,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-18 22:52:03,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 22:52:03,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 22:52:03,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 22:52:03,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 22:52:03,679 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-01-18 22:52:03,681 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 22:52:03,681 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 22:52:03,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:52:03 BasicIcfg [2022-01-18 22:52:03,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 22:52:03,684 INFO L158 Benchmark]: Toolchain (without parser) took 3573.31ms. Allocated memory was 415.2MB in the beginning and 501.2MB in the end (delta: 86.0MB). Free memory was 359.9MB in the beginning and 361.6MB in the end (delta: -1.7MB). Peak memory consumption was 86.5MB. Max. memory is 16.0GB. [2022-01-18 22:52:03,687 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 415.2MB. Free memory is still 377.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 22:52:03,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.47ms. Allocated memory was 415.2MB in the beginning and 501.2MB in the end (delta: 86.0MB). Free memory was 359.7MB in the beginning and 466.2MB in the end (delta: -106.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.0GB. [2022-01-18 22:52:03,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.43ms. Allocated memory is still 501.2MB. Free memory was 466.2MB in the beginning and 464.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:52:03,688 INFO L158 Benchmark]: Boogie Preprocessor took 31.21ms. Allocated memory is still 501.2MB. Free memory was 464.1MB in the beginning and 463.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 22:52:03,688 INFO L158 Benchmark]: RCFGBuilder took 364.86ms. Allocated memory is still 501.2MB. Free memory was 463.1MB in the beginning and 448.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 22:52:03,688 INFO L158 Benchmark]: TraceAbstraction took 2794.71ms. Allocated memory is still 501.2MB. Free memory was 447.4MB in the beginning and 361.6MB in the end (delta: 85.8MB). Peak memory consumption was 88.9MB. Max. memory is 16.0GB. [2022-01-18 22:52:03,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 415.2MB. Free memory is still 377.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 326.47ms. Allocated memory was 415.2MB in the beginning and 501.2MB in the end (delta: 86.0MB). Free memory was 359.7MB in the beginning and 466.2MB in the end (delta: -106.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.43ms. Allocated memory is still 501.2MB. Free memory was 466.2MB in the beginning and 464.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.21ms. Allocated memory is still 501.2MB. Free memory was 464.1MB in the beginning and 463.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 364.86ms. Allocated memory is still 501.2MB. Free memory was 463.1MB in the beginning and 448.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 2794.71ms. Allocated memory is still 501.2MB. Free memory was 447.4MB in the beginning and 361.6MB in the end (delta: 85.8MB). Peak memory consumption was 88.9MB. 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 112 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: 2.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 299 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 299 mSDsluCounter, 309 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 311 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 76 mSDtfsCounter, 434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=559occurred in iteration=6, InterpolantAutomatonStates: 82, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 1576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 22:52:03,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...