/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:23:32,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:23:32,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:23:32,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:23:32,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:23:32,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:23:32,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:23:32,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:23:32,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:23:32,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:23:32,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:23:32,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:23:32,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:23:32,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:23:32,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:23:32,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:23:33,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:23:33,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:23:33,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:23:33,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:23:33,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:23:33,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:23:33,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:23:33,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:23:33,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 20:23:33,025 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 20:23:33,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 20:23:33,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 20:23:33,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 20:23:33,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 20:23:33,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:23:33,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:23:33,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:23:33,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:23:33,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:23:33,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:23:33,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:23:33,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:23:33,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:23:33,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:23:33,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:23:33,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:23:33,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:23:33,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:23:33,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:23:33,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:23:33,070 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:23:33,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:23:33,070 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:23:33,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:23:33,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:23:33,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:23:33,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:23:33,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:23:33,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:23:33,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:23:33,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:23:33,076 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:23:33,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:23:33,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:23:33,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:23:33,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:23:33,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:23:33,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:23:33,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:23:33,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:23:33,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:23:33,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:23:33,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:23:33,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:23:33,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:23:33,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:23:33,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:23:33,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:23:33,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:23:33,402 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:23:33,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-11 20:23:33,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c8170d2/4fbc1a26cc004f5ca08d5efee15a1857/FLAG3b7a70df2 [2021-03-11 20:23:34,008 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:23:34,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-11 20:23:34,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c8170d2/4fbc1a26cc004f5ca08d5efee15a1857/FLAG3b7a70df2 [2021-03-11 20:23:34,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c8170d2/4fbc1a26cc004f5ca08d5efee15a1857 [2021-03-11 20:23:34,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:23:34,470 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:23:34,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:23:34,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:23:34,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:23:34,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:34,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9b0612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34, skipping insertion in model container [2021-03-11 20:23:34,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:34,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:23:34,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:23:34,642 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-03-11 20:23:34,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:23:34,788 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:23:34,799 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-03-11 20:23:34,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:23:34,920 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:23:34,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34 WrapperNode [2021-03-11 20:23:34,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:23:34,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:23:34,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:23:34,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:23:34,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:34,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:34,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:23:34,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:23:34,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:23:34,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:23:34,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:34,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:34,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:35,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:35,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:35,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:35,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... [2021-03-11 20:23:35,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:23:35,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:23:35,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:23:35,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:23:35,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:23:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:23:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:23:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:23:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:23:35,097 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:23:35,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:23:35,098 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:23:35,098 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:23:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:23:35,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:23:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:23:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:23:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:23:35,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:23:35,101 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:23:35,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:23:35,542 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:23:35,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:23:35 BoogieIcfgContainer [2021-03-11 20:23:35,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:23:35,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:23:35,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:23:35,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:23:35,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:23:34" (1/3) ... [2021-03-11 20:23:35,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a45565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:23:35, skipping insertion in model container [2021-03-11 20:23:35,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:23:34" (2/3) ... [2021-03-11 20:23:35,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a45565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:23:35, skipping insertion in model container [2021-03-11 20:23:35,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:23:35" (3/3) ... [2021-03-11 20:23:35,551 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-03-11 20:23:35,556 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:23:35,560 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:23:35,561 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:23:35,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,600 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,601 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,602 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,603 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,604 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,604 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,605 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,605 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,605 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,608 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,608 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,608 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,609 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,612 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,615 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,616 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,616 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,621 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,621 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,621 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,622 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:23:35,624 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:23:35,640 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:23:35,662 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:23:35,662 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:23:35,662 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:23:35,663 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:23:35,663 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:23:35,663 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:23:35,663 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:23:35,663 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:23:35,672 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:23:35,719 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 20:23:35,719 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:23:35,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:23:35,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:23:35,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 20:23:35,729 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:23:35,737 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:23:35,739 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:23:35,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-11 20:23:35,751 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 20:23:35,752 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:23:35,752 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 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. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:23:35,753 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:23:37,790 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:23:38,011 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:23:38,094 INFO L131 LiptonReduction]: Checked pairs total: 1856 [2021-03-11 20:23:38,095 INFO L133 LiptonReduction]: Total number of compositions: 47 [2021-03-11 20:23:38,096 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2370 [2021-03-11 20:23:38,104 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:23:38,104 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:23:38,104 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:38,105 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:38,105 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash -373270630, now seen corresponding path program 1 times [2021-03-11 20:23:38,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:38,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996923580] [2021-03-11 20:23:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:38,296 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:23:38,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:23:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:38,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996923580] [2021-03-11 20:23:38,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:38,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:23:38,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316838304] [2021-03-11 20:23:38,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:23:38,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:38,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:23:38,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:23:38,330 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:23:38,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2021-03-11 20:23:38,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:38,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:23:38,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:38,397 INFO L129 PetriNetUnfolder]: 47/139 cut-off events. [2021-03-11 20:23:38,402 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:23:38,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 139 events. 47/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 676 event pairs, 19 based on Foata normal form. 27/158 useless extension candidates. Maximal degree in co-relation 235. Up to 66 conditions per place. [2021-03-11 20:23:38,406 INFO L132 encePairwiseOnDemand]: 114/122 looper letters, 6 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2021-03-11 20:23:38,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 77 flow [2021-03-11 20:23:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:23:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:23:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2021-03-11 20:23:38,417 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7704918032786885 [2021-03-11 20:23:38,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2021-03-11 20:23:38,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2021-03-11 20:23:38,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:38,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2021-03-11 20:23:38,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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) [2021-03-11 20:23:38,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:23:38,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:23:38,430 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 282 transitions. [2021-03-11 20:23:38,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 77 flow [2021-03-11 20:23:38,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:23:38,434 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2021-03-11 20:23:38,435 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2021-03-11 20:23:38,436 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-03-11 20:23:38,436 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2021-03-11 20:23:38,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2021-03-11 20:23:38,436 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:38,436 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:38,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:23:38,437 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:38,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:38,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1313511652, now seen corresponding path program 1 times [2021-03-11 20:23:38,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:38,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673948257] [2021-03-11 20:23:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:38,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:38,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:38,515 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:23:38,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:23:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:38,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673948257] [2021-03-11 20:23:38,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:38,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:23:38,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697414451] [2021-03-11 20:23:38,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:23:38,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:38,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:23:38,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:23:38,533 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:23:38,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-11 20:23:38,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:38,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:23:38,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:38,610 INFO L129 PetriNetUnfolder]: 98/230 cut-off events. [2021-03-11 20:23:38,610 INFO L130 PetriNetUnfolder]: For 131/243 co-relation queries the response was YES. [2021-03-11 20:23:38,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 230 events. 98/230 cut-off events. For 131/243 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1101 event pairs, 6 based on Foata normal form. 8/232 useless extension candidates. Maximal degree in co-relation 637. Up to 91 conditions per place. [2021-03-11 20:23:38,614 INFO L132 encePairwiseOnDemand]: 114/122 looper letters, 15 selfloop transitions, 15 changer transitions 0/39 dead transitions. [2021-03-11 20:23:38,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 228 flow [2021-03-11 20:23:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:23:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:23:38,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2021-03-11 20:23:38,618 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-03-11 20:23:38,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2021-03-11 20:23:38,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2021-03-11 20:23:38,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:38,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2021-03-11 20:23:38,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2021-03-11 20:23:38,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:23:38,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:23:38,630 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 5 states and 450 transitions. [2021-03-11 20:23:38,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 228 flow [2021-03-11 20:23:38,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 39 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:23:38,633 INFO L241 Difference]: Finished difference. Result has 34 places, 33 transitions, 198 flow [2021-03-11 20:23:38,633 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2021-03-11 20:23:38,634 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2021-03-11 20:23:38,634 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 198 flow [2021-03-11 20:23:38,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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) [2021-03-11 20:23:38,634 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:38,634 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:38,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:23:38,634 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:38,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1313509048, now seen corresponding path program 1 times [2021-03-11 20:23:38,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:38,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610180098] [2021-03-11 20:23:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:38,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:38,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:38,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610180098] [2021-03-11 20:23:38,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:38,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:23:38,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837701092] [2021-03-11 20:23:38,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:23:38,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:38,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:23:38,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:23:38,716 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 122 [2021-03-11 20:23:38,717 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-11 20:23:38,717 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:38,717 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 122 [2021-03-11 20:23:38,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:38,734 INFO L129 PetriNetUnfolder]: 52/157 cut-off events. [2021-03-11 20:23:38,734 INFO L130 PetriNetUnfolder]: For 191/253 co-relation queries the response was YES. [2021-03-11 20:23:38,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 157 events. 52/157 cut-off events. For 191/253 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 748 event pairs, 4 based on Foata normal form. 7/160 useless extension candidates. Maximal degree in co-relation 480. Up to 57 conditions per place. [2021-03-11 20:23:38,736 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 1 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2021-03-11 20:23:38,736 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 210 flow [2021-03-11 20:23:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:23:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:23:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-03-11 20:23:38,738 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8387978142076503 [2021-03-11 20:23:38,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-03-11 20:23:38,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-03-11 20:23:38,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:38,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-03-11 20:23:38,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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) [2021-03-11 20:23:38,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:23:38,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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) [2021-03-11 20:23:38,742 INFO L185 Difference]: Start difference. First operand has 34 places, 33 transitions, 198 flow. Second operand 3 states and 307 transitions. [2021-03-11 20:23:38,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 210 flow [2021-03-11 20:23:38,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 20:23:38,745 INFO L241 Difference]: Finished difference. Result has 37 places, 33 transitions, 215 flow [2021-03-11 20:23:38,745 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2021-03-11 20:23:38,745 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-03-11 20:23:38,745 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 215 flow [2021-03-11 20:23:38,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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) [2021-03-11 20:23:38,746 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:38,746 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:38,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:23:38,746 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:38,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1009785582, now seen corresponding path program 1 times [2021-03-11 20:23:38,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:38,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914370647] [2021-03-11 20:23:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:38,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:38,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:38,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:38,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:38,806 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:23:38,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:23:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:38,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914370647] [2021-03-11 20:23:38,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:38,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:23:38,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287077845] [2021-03-11 20:23:38,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:23:38,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:38,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:23:38,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:23:38,822 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:23:38,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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) [2021-03-11 20:23:38,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:38,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:23:38,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:38,872 INFO L129 PetriNetUnfolder]: 51/152 cut-off events. [2021-03-11 20:23:38,872 INFO L130 PetriNetUnfolder]: For 315/471 co-relation queries the response was YES. [2021-03-11 20:23:38,873 INFO L84 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 152 events. 51/152 cut-off events. For 315/471 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 671 event pairs, 3 based on Foata normal form. 14/162 useless extension candidates. Maximal degree in co-relation 580. Up to 52 conditions per place. [2021-03-11 20:23:38,876 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 13 selfloop transitions, 8 changer transitions 14/44 dead transitions. [2021-03-11 20:23:38,876 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 357 flow [2021-03-11 20:23:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:23:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:23:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2021-03-11 20:23:38,878 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7295081967213115 [2021-03-11 20:23:38,878 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2021-03-11 20:23:38,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2021-03-11 20:23:38,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:38,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2021-03-11 20:23:38,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 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) [2021-03-11 20:23:38,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:23:38,881 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:23:38,881 INFO L185 Difference]: Start difference. First operand has 37 places, 33 transitions, 215 flow. Second operand 5 states and 445 transitions. [2021-03-11 20:23:38,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 357 flow [2021-03-11 20:23:38,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:23:38,888 INFO L241 Difference]: Finished difference. Result has 43 places, 27 transitions, 197 flow [2021-03-11 20:23:38,888 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2021-03-11 20:23:38,888 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-03-11 20:23:38,888 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 197 flow [2021-03-11 20:23:38,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 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) [2021-03-11 20:23:38,889 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:38,889 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:38,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:23:38,889 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -439195312, now seen corresponding path program 1 times [2021-03-11 20:23:38,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:38,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554328612] [2021-03-11 20:23:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:38,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:38,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:38,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:38,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:38,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554328612] [2021-03-11 20:23:38,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:38,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:23:38,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844772232] [2021-03-11 20:23:38,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:23:38,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:38,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:23:38,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:23:38,955 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 122 [2021-03-11 20:23:38,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-03-11 20:23:38,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:38,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 122 [2021-03-11 20:23:38,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:38,979 INFO L129 PetriNetUnfolder]: 10/62 cut-off events. [2021-03-11 20:23:38,980 INFO L130 PetriNetUnfolder]: For 193/199 co-relation queries the response was YES. [2021-03-11 20:23:38,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 62 events. 10/62 cut-off events. For 193/199 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 201 event pairs, 1 based on Foata normal form. 5/67 useless extension candidates. Maximal degree in co-relation 258. Up to 23 conditions per place. [2021-03-11 20:23:38,980 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 5 selfloop transitions, 4 changer transitions 12/32 dead transitions. [2021-03-11 20:23:38,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 287 flow [2021-03-11 20:23:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:23:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:23:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2021-03-11 20:23:38,982 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8032786885245902 [2021-03-11 20:23:38,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2021-03-11 20:23:38,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2021-03-11 20:23:38,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:38,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2021-03-11 20:23:38,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 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) [2021-03-11 20:23:38,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:23:38,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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) [2021-03-11 20:23:38,985 INFO L185 Difference]: Start difference. First operand has 43 places, 27 transitions, 197 flow. Second operand 4 states and 392 transitions. [2021-03-11 20:23:38,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 287 flow [2021-03-11 20:23:38,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 222 flow, removed 10 selfloop flow, removed 8 redundant places. [2021-03-11 20:23:38,987 INFO L241 Difference]: Finished difference. Result has 40 places, 20 transitions, 111 flow [2021-03-11 20:23:38,988 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2021-03-11 20:23:38,988 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2021-03-11 20:23:38,988 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 111 flow [2021-03-11 20:23:38,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 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) [2021-03-11 20:23:38,988 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:38,988 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:38,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:23:38,989 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash -817679448, now seen corresponding path program 1 times [2021-03-11 20:23:38,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:38,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593673153] [2021-03-11 20:23:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:39,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:23:39,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,045 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:23:39,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:23:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:39,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593673153] [2021-03-11 20:23:39,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:39,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:23:39,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213383276] [2021-03-11 20:23:39,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:23:39,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:39,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:23:39,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:23:39,065 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:23:39,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 20 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2021-03-11 20:23:39,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:39,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:23:39,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:39,099 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2021-03-11 20:23:39,099 INFO L130 PetriNetUnfolder]: For 49/57 co-relation queries the response was YES. [2021-03-11 20:23:39,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 33 events. 1/33 cut-off events. For 49/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 7/40 useless extension candidates. Maximal degree in co-relation 101. Up to 11 conditions per place. [2021-03-11 20:23:39,099 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 3 selfloop transitions, 4 changer transitions 7/24 dead transitions. [2021-03-11 20:23:39,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 24 transitions, 173 flow [2021-03-11 20:23:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:23:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:23:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 549 transitions. [2021-03-11 20:23:39,101 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.75 [2021-03-11 20:23:39,102 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 549 transitions. [2021-03-11 20:23:39,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 549 transitions. [2021-03-11 20:23:39,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:39,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 549 transitions. [2021-03-11 20:23:39,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.5) internal successors, (549), 6 states have internal predecessors, (549), 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) [2021-03-11 20:23:39,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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) [2021-03-11 20:23:39,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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) [2021-03-11 20:23:39,105 INFO L185 Difference]: Start difference. First operand has 40 places, 20 transitions, 111 flow. Second operand 6 states and 549 transitions. [2021-03-11 20:23:39,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 24 transitions, 173 flow [2021-03-11 20:23:39,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 24 transitions, 124 flow, removed 3 selfloop flow, removed 10 redundant places. [2021-03-11 20:23:39,107 INFO L241 Difference]: Finished difference. Result has 37 places, 17 transitions, 73 flow [2021-03-11 20:23:39,107 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=17} [2021-03-11 20:23:39,107 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-03-11 20:23:39,107 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 17 transitions, 73 flow [2021-03-11 20:23:39,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 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) [2021-03-11 20:23:39,108 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:39,108 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:39,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:23:39,108 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:39,108 INFO L82 PathProgramCache]: Analyzing trace with hash -582186448, now seen corresponding path program 1 times [2021-03-11 20:23:39,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:39,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26509286] [2021-03-11 20:23:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:39,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:23:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:39,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26509286] [2021-03-11 20:23:39,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:39,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:23:39,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270220285] [2021-03-11 20:23:39,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:23:39,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:39,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:23:39,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:23:39,184 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:23:39,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 17 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2021-03-11 20:23:39,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:39,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:23:39,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:39,213 INFO L129 PetriNetUnfolder]: 23/66 cut-off events. [2021-03-11 20:23:39,213 INFO L130 PetriNetUnfolder]: For 58/71 co-relation queries the response was YES. [2021-03-11 20:23:39,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 66 events. 23/66 cut-off events. For 58/71 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 200 event pairs, 9 based on Foata normal form. 5/66 useless extension candidates. Maximal degree in co-relation 151. Up to 39 conditions per place. [2021-03-11 20:23:39,214 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 3 changer transitions 8/27 dead transitions. [2021-03-11 20:23:39,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 125 flow [2021-03-11 20:23:39,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:23:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:23:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-03-11 20:23:39,216 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7754098360655738 [2021-03-11 20:23:39,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-03-11 20:23:39,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-03-11 20:23:39,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:39,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-03-11 20:23:39,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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) [2021-03-11 20:23:39,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:23:39,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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) [2021-03-11 20:23:39,221 INFO L185 Difference]: Start difference. First operand has 37 places, 17 transitions, 73 flow. Second operand 5 states and 473 transitions. [2021-03-11 20:23:39,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 125 flow [2021-03-11 20:23:39,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 106 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-11 20:23:39,222 INFO L241 Difference]: Finished difference. Result has 35 places, 19 transitions, 85 flow [2021-03-11 20:23:39,222 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2021-03-11 20:23:39,222 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2021-03-11 20:23:39,222 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 85 flow [2021-03-11 20:23:39,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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) [2021-03-11 20:23:39,223 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:39,223 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:39,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:23:39,223 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:39,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:39,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1635968073, now seen corresponding path program 1 times [2021-03-11 20:23:39,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:39,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422521378] [2021-03-11 20:23:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:39,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:23:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:39,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422521378] [2021-03-11 20:23:39,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:39,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:23:39,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565180226] [2021-03-11 20:23:39,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:23:39,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:39,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:23:39,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:23:39,288 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:23:39,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2021-03-11 20:23:39,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:39,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:23:39,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:39,325 INFO L129 PetriNetUnfolder]: 9/40 cut-off events. [2021-03-11 20:23:39,325 INFO L130 PetriNetUnfolder]: For 62/100 co-relation queries the response was YES. [2021-03-11 20:23:39,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 40 events. 9/40 cut-off events. For 62/100 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 86 event pairs, 1 based on Foata normal form. 9/47 useless extension candidates. Maximal degree in co-relation 126. Up to 27 conditions per place. [2021-03-11 20:23:39,325 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 3 selfloop transitions, 5 changer transitions 10/29 dead transitions. [2021-03-11 20:23:39,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 179 flow [2021-03-11 20:23:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:23:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:23:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2021-03-11 20:23:39,328 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.773224043715847 [2021-03-11 20:23:39,328 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2021-03-11 20:23:39,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2021-03-11 20:23:39,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:39,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2021-03-11 20:23:39,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 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) [2021-03-11 20:23:39,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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) [2021-03-11 20:23:39,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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) [2021-03-11 20:23:39,337 INFO L185 Difference]: Start difference. First operand has 35 places, 19 transitions, 85 flow. Second operand 6 states and 566 transitions. [2021-03-11 20:23:39,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 179 flow [2021-03-11 20:23:39,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:23:39,338 INFO L241 Difference]: Finished difference. Result has 39 places, 19 transitions, 104 flow [2021-03-11 20:23:39,338 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=39, PETRI_TRANSITIONS=19} [2021-03-11 20:23:39,338 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2021-03-11 20:23:39,338 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 19 transitions, 104 flow [2021-03-11 20:23:39,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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) [2021-03-11 20:23:39,339 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:23:39,339 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:23:39,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:23:39,339 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:23:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:23:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1985358734, now seen corresponding path program 1 times [2021-03-11 20:23:39,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:23:39,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562039634] [2021-03-11 20:23:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:23:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:23:39,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:23:39,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:23:39,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 20:23:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:23:39,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562039634] [2021-03-11 20:23:39,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:23:39,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:23:39,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968977105] [2021-03-11 20:23:39,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:23:39,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:23:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:23:39,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:23:39,418 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:23:39,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 19 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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) [2021-03-11 20:23:39,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:23:39,418 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:23:39,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:23:39,443 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-11 20:23:39,443 INFO L130 PetriNetUnfolder]: For 44/58 co-relation queries the response was YES. [2021-03-11 20:23:39,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 20 events. 1/20 cut-off events. For 44/58 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 5/25 useless extension candidates. Maximal degree in co-relation 66. Up to 9 conditions per place. [2021-03-11 20:23:39,444 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-03-11 20:23:39,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 20 transitions, 126 flow [2021-03-11 20:23:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:23:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:23:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 647 transitions. [2021-03-11 20:23:39,447 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7576112412177985 [2021-03-11 20:23:39,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 647 transitions. [2021-03-11 20:23:39,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 647 transitions. [2021-03-11 20:23:39,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:23:39,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 647 transitions. [2021-03-11 20:23:39,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 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) [2021-03-11 20:23:39,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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) [2021-03-11 20:23:39,451 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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) [2021-03-11 20:23:39,451 INFO L185 Difference]: Start difference. First operand has 39 places, 19 transitions, 104 flow. Second operand 7 states and 647 transitions. [2021-03-11 20:23:39,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 20 transitions, 126 flow [2021-03-11 20:23:39,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 102 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-11 20:23:39,452 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-11 20:23:39,452 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-11 20:23:39,452 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-03-11 20:23:39,452 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2021-03-11 20:23:39,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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) [2021-03-11 20:23:39,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:23:39,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:23:39 BasicIcfg [2021-03-11 20:23:39,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:23:39,460 INFO L168 Benchmark]: Toolchain (without parser) took 4990.63 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 232.9 MB in the beginning and 161.5 MB in the end (delta: 71.4 MB). Peak memory consumption was 180.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:39,460 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:23:39,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.80 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 232.1 MB in the beginning and 327.4 MB in the end (delta: -95.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:39,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.14 ms. Allocated memory is still 364.9 MB. Free memory was 327.4 MB in the beginning and 325.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:39,463 INFO L168 Benchmark]: Boogie Preprocessor took 36.32 ms. Allocated memory is still 364.9 MB. Free memory was 325.4 MB in the beginning and 323.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:39,464 INFO L168 Benchmark]: RCFGBuilder took 525.10 ms. Allocated memory is still 364.9 MB. Free memory was 323.6 MB in the beginning and 301.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:39,466 INFO L168 Benchmark]: TraceAbstraction took 3911.09 ms. Allocated memory is still 364.9 MB. Free memory was 301.3 MB in the beginning and 161.5 MB in the end (delta: 139.8 MB). Peak memory consumption was 141.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:23:39,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 449.80 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 232.1 MB in the beginning and 327.4 MB in the end (delta: -95.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 59.14 ms. Allocated memory is still 364.9 MB. Free memory was 327.4 MB in the beginning and 325.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 36.32 ms. Allocated memory is still 364.9 MB. Free memory was 325.4 MB in the beginning and 323.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 525.10 ms. Allocated memory is still 364.9 MB. Free memory was 323.6 MB in the beginning and 301.7 MB in the end (delta: 21.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3911.09 ms. Allocated memory is still 364.9 MB. Free memory was 301.3 MB in the beginning and 161.5 MB in the end (delta: 139.8 MB). Peak memory consumption was 141.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2355.8ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1856 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 896, positive: 811, positive conditional: 0, positive unconditional: 811, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 618, positive: 583, positive conditional: 0, positive unconditional: 583, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 618, positive: 577, positive conditional: 0, positive unconditional: 577, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 182, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 147, negative conditional: 0, negative unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 896, positive: 228, positive conditional: 0, positive unconditional: 228, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 618, unknown conditional: 0, unknown unconditional: 618] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3794.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 513.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2436.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 42 SDslu, 32 SDs, 0 SdLazy, 126 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 140.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.8ms SsaConstructionTime, 183.3ms SatisfiabilityAnalysisTime, 465.8ms InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...