/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 11:25:49,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 11:25:49,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 11:25:49,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 11:25:49,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 11:25:49,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 11:25:49,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 11:25:49,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 11:25:49,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 11:25:49,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 11:25:49,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 11:25:49,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 11:25:49,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 11:25:49,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 11:25:49,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 11:25:49,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 11:25:49,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 11:25:49,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 11:25:49,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 11:25:49,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 11:25:49,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 11:25:49,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 11:25:49,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 11:25:49,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 11:25:49,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 11:25:49,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 11:25:49,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 11:25:49,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 11:25:49,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 11:25:49,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 11:25:49,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 11:25:49,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 11:25:49,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 11:25:49,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 11:25:49,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 11:25:49,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 11:25:49,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf [2021-08-13 11:25:49,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 11:25:49,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 11:25:49,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 11:25:49,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 11:25:49,949 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 11:25:49,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 11:25:49,949 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 11:25:49,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 11:25:49,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 11:25:49,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 11:25:49,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 11:25:49,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 11:25:49,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 11:25:49,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 11:25:49,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 11:25:49,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 11:25:49,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 11:25:49,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 11:25:49,952 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 11:25:49,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 11:25:49,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 11:25:49,952 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 11:25:49,952 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 11:25:49,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 11:25:50,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 11:25:50,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 11:25:50,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 11:25:50,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 11:25:50,210 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 11:25:50,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-08-13 11:25:50,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecd5b5ae/624c2f4096694685b1d625867924843d/FLAG6c3c1109b [2021-08-13 11:25:50,691 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 11:25:50,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-08-13 11:25:50,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecd5b5ae/624c2f4096694685b1d625867924843d/FLAG6c3c1109b [2021-08-13 11:25:50,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecd5b5ae/624c2f4096694685b1d625867924843d [2021-08-13 11:25:50,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 11:25:50,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 11:25:50,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 11:25:50,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 11:25:50,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 11:25:50,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 11:25:50" (1/1) ... [2021-08-13 11:25:50,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f72c23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:50, skipping insertion in model container [2021-08-13 11:25:50,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 11:25:50" (1/1) ... [2021-08-13 11:25:50,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 11:25:50,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 11:25:50,876 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i[949,962] [2021-08-13 11:25:51,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 11:25:51,019 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 11:25:51,031 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i[949,962] [2021-08-13 11:25:51,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 11:25:51,095 INFO L208 MainTranslator]: Completed translation [2021-08-13 11:25:51,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51 WrapperNode [2021-08-13 11:25:51,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 11:25:51,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 11:25:51,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 11:25:51,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 11:25:51,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 11:25:51,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 11:25:51,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 11:25:51,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 11:25:51,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (1/1) ... [2021-08-13 11:25:51,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 11:25:51,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 11:25:51,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 11:25:51,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 11:25:51,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (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 [2021-08-13 11:25:51,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 11:25:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 11:25:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 11:25:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 11:25:51,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 11:25:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 11:25:51,190 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 11:25:51,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 11:25:51,524 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 11:25:51,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 11:25:51 BoogieIcfgContainer [2021-08-13 11:25:51,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 11:25:51,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 11:25:51,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 11:25:51,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 11:25:51,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 11:25:50" (1/3) ... [2021-08-13 11:25:51,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e336f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 11:25:51, skipping insertion in model container [2021-08-13 11:25:51,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 11:25:51" (2/3) ... [2021-08-13 11:25:51,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e336f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 11:25:51, skipping insertion in model container [2021-08-13 11:25:51,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 11:25:51" (3/3) ... [2021-08-13 11:25:51,531 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-08-13 11:25:51,535 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 11:25:51,535 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 11:25:51,536 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 11:25:51,553 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,554 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,555 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,555 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,555 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,555 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,557 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,558 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,560 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,560 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,560 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,563 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,564 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,564 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,565 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,565 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 11:25:51,566 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 11:25:51,582 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 11:25:51,604 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 11:25:51,604 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 11:25:51,604 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 11:25:51,604 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 11:25:51,605 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 11:25:51,605 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 11:25:51,605 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 11:25:51,605 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 11:25:51,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 11:25:51,661 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-08-13 11:25:51,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 11:25:51,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 11:25:51,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-08-13 11:25:51,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-08-13 11:25:51,698 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-08-13 11:25:51,699 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 11:25:51,699 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:25:51,699 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:25:51,700 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:25:51,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:25:51,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1683349452, now seen corresponding path program 1 times [2021-08-13 11:25:51,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:25:51,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130723467] [2021-08-13 11:25:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:25:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:25:51,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:51,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:51,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:51,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:51,977 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 11:25:51,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 11:25:51,994 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:25:51,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:25:52,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:52,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:52,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 11:25:52,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:25:52,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130723467] [2021-08-13 11:25:52,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130723467] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:25:52,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:25:52,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 11:25:52,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781762182] [2021-08-13 11:25:52,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 11:25:52,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:25:52,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 11:25:52,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 11:25:52,068 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 11:25:52,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-08-13 11:25:52,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:25:52,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 11:25:52,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:25:52,393 INFO L129 PetriNetUnfolder]: 173/508 cut-off events. [2021-08-13 11:25:52,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 11:25:52,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 508 events. 173/508 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2859 event pairs, 21 based on Foata normal form. 21/513 useless extension candidates. Maximal degree in co-relation 803. Up to 117 conditions per place. [2021-08-13 11:25:52,400 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-08-13 11:25:52,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-08-13 11:25:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 11:25:52,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 11:25:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-08-13 11:25:52,416 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-08-13 11:25:52,417 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-08-13 11:25:52,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-08-13 11:25:52,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:25:52,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-08-13 11:25:52,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 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) [2021-08-13 11:25:52,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 11:25:52,434 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 11:25:52,435 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2021-08-13 11:25:52,435 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 109 transitions, 339 flow [2021-08-13 11:25:52,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-08-13 11:25:52,435 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:25:52,436 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:25:52,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 11:25:52,436 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:25:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:25:52,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1410993197, now seen corresponding path program 1 times [2021-08-13 11:25:52,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:25:52,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010012363] [2021-08-13 11:25:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:25:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:25:52,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:52,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:52,501 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 11:25:52,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 11:25:52,509 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:25:52,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:25:52,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:52,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:52,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 11:25:52,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:25:52,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010012363] [2021-08-13 11:25:52,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010012363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:25:52,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:25:52,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 11:25:52,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290105436] [2021-08-13 11:25:52,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 11:25:52,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:25:52,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 11:25:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 11:25:52,541 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 11:25:52,541 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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) [2021-08-13 11:25:52,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:25:52,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 11:25:52,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:25:52,771 INFO L129 PetriNetUnfolder]: 213/605 cut-off events. [2021-08-13 11:25:52,771 INFO L130 PetriNetUnfolder]: For 25/257 co-relation queries the response was YES. [2021-08-13 11:25:52,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 605 events. 213/605 cut-off events. For 25/257 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3780 event pairs, 15 based on Foata normal form. 14/607 useless extension candidates. Maximal degree in co-relation 1422. Up to 141 conditions per place. [2021-08-13 11:25:52,774 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 15 selfloop transitions, 13 changer transitions 131/212 dead transitions. [2021-08-13 11:25:52,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 212 transitions, 1069 flow [2021-08-13 11:25:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 11:25:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 11:25:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 916 transitions. [2021-08-13 11:25:52,776 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8592870544090057 [2021-08-13 11:25:52,776 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 916 transitions. [2021-08-13 11:25:52,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 916 transitions. [2021-08-13 11:25:52,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:25:52,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 916 transitions. [2021-08-13 11:25:52,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 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) [2021-08-13 11:25:52,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 11:25:52,780 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 11:25:52,780 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2021-08-13 11:25:52,781 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 212 transitions, 1069 flow [2021-08-13 11:25:52,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 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) [2021-08-13 11:25:52,781 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:25:52,781 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:25:52,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 11:25:52,781 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:25:52,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:25:52,782 INFO L82 PathProgramCache]: Analyzing trace with hash -640728756, now seen corresponding path program 1 times [2021-08-13 11:25:52,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:25:52,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306780427] [2021-08-13 11:25:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:25:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:25:52,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:52,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:52,843 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 11:25:52,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 11:25:52,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 11:25:52,862 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 11:25:52,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:52,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:52,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 11:25:52,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:25:52,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306780427] [2021-08-13 11:25:52,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306780427] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:25:52,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:25:52,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 11:25:52,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451113321] [2021-08-13 11:25:52,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 11:25:52,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:25:52,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 11:25:52,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 11:25:52,871 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 11:25:52,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 212 transitions, 1069 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-08-13 11:25:52,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:25:52,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 11:25:52,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:25:53,058 INFO L129 PetriNetUnfolder]: 559/1458 cut-off events. [2021-08-13 11:25:53,059 INFO L130 PetriNetUnfolder]: For 51/129 co-relation queries the response was YES. [2021-08-13 11:25:53,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 1458 events. 559/1458 cut-off events. For 51/129 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 11641 event pairs, 35 based on Foata normal form. 0/1347 useless extension candidates. Maximal degree in co-relation 3172. Up to 321 conditions per place. [2021-08-13 11:25:53,068 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 24 selfloop transitions, 17 changer transitions 34/199 dead transitions. [2021-08-13 11:25:53,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 199 transitions, 953 flow [2021-08-13 11:25:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 11:25:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 11:25:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-08-13 11:25:53,070 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-08-13 11:25:53,070 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-08-13 11:25:53,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-08-13 11:25:53,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:25:53,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-08-13 11:25:53,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 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) [2021-08-13 11:25:53,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-08-13 11:25:53,073 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-08-13 11:25:53,073 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 33 predicate places. [2021-08-13 11:25:53,073 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 199 transitions, 953 flow [2021-08-13 11:25:53,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-08-13 11:25:53,073 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:25:53,074 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:25:53,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 11:25:53,074 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:25:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:25:53,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1339828334, now seen corresponding path program 1 times [2021-08-13 11:25:53,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:25:53,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142227715] [2021-08-13 11:25:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:25:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:25:53,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:53,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:53,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:53,141 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 11:25:53,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 11:25:53,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 11:25:53,162 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 11:25:53,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:53,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 11:25:53,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:25:53,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142227715] [2021-08-13 11:25:53,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142227715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:25:53,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:25:53,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 11:25:53,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378949995] [2021-08-13 11:25:53,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 11:25:53,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:25:53,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 11:25:53,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 11:25:53,180 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 11:25:53,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 199 transitions, 953 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-08-13 11:25:53,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:25:53,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 11:25:53,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:25:53,412 INFO L129 PetriNetUnfolder]: 378/1032 cut-off events. [2021-08-13 11:25:53,412 INFO L130 PetriNetUnfolder]: For 101/601 co-relation queries the response was YES. [2021-08-13 11:25:53,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 1032 events. 378/1032 cut-off events. For 101/601 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7960 event pairs, 5 based on Foata normal form. 98/1051 useless extension candidates. Maximal degree in co-relation 2683. Up to 288 conditions per place. [2021-08-13 11:25:53,418 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 22 selfloop transitions, 44 changer transitions 57/193 dead transitions. [2021-08-13 11:25:53,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 193 transitions, 999 flow [2021-08-13 11:25:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 11:25:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 11:25:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-08-13 11:25:53,421 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-08-13 11:25:53,421 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-08-13 11:25:53,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-08-13 11:25:53,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:25:53,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-08-13 11:25:53,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 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) [2021-08-13 11:25:53,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 11:25:53,424 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-08-13 11:25:53,424 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 42 predicate places. [2021-08-13 11:25:53,425 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 193 transitions, 999 flow [2021-08-13 11:25:53,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-08-13 11:25:53,425 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:25:53,425 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:25:53,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 11:25:53,427 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:25:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:25:53,428 INFO L82 PathProgramCache]: Analyzing trace with hash -722901777, now seen corresponding path program 1 times [2021-08-13 11:25:53,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:25:53,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740534038] [2021-08-13 11:25:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:25:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:25:53,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:53,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:53,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:53,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:53,489 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 11:25:53,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 11:25:53,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 11:25:53,512 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 11:25:53,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:53,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 11:25:53,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:25:53,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740534038] [2021-08-13 11:25:53,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740534038] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:25:53,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:25:53,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 11:25:53,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824679882] [2021-08-13 11:25:53,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 11:25:53,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:25:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 11:25:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 11:25:53,526 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 11:25:53,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 193 transitions, 999 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 11:25:53,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:25:53,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 11:25:53,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:25:53,812 INFO L129 PetriNetUnfolder]: 335/899 cut-off events. [2021-08-13 11:25:53,812 INFO L130 PetriNetUnfolder]: For 230/1035 co-relation queries the response was YES. [2021-08-13 11:25:53,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 899 events. 335/899 cut-off events. For 230/1035 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 6983 event pairs, 0 based on Foata normal form. 137/968 useless extension candidates. Maximal degree in co-relation 2951. Up to 269 conditions per place. [2021-08-13 11:25:53,818 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 19 selfloop transitions, 48 changer transitions 47/180 dead transitions. [2021-08-13 11:25:53,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 180 transitions, 1141 flow [2021-08-13 11:25:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 11:25:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 11:25:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-08-13 11:25:53,821 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-08-13 11:25:53,821 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-08-13 11:25:53,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-08-13 11:25:53,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:25:53,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-08-13 11:25:53,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.5) internal successors, (1144), 16 states have internal predecessors, (1144), 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) [2021-08-13 11:25:53,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-08-13 11:25:53,827 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-08-13 11:25:53,827 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 48 predicate places. [2021-08-13 11:25:53,827 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 1141 flow [2021-08-13 11:25:53,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 11:25:53,827 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:25:53,828 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:25:53,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 11:25:53,828 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:25:53,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:25:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1602729931, now seen corresponding path program 1 times [2021-08-13 11:25:53,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:25:53,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281884810] [2021-08-13 11:25:53,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:25:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:25:53,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:53,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:53,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:53,889 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:25:53,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:25:53,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:53,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:53,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:53,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 11:25:53,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:25:53,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281884810] [2021-08-13 11:25:53,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281884810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:25:53,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:25:53,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 11:25:53,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315228207] [2021-08-13 11:25:53,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 11:25:53,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:25:53,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 11:25:53,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 11:25:53,944 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-08-13 11:25:53,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 180 transitions, 1141 flow. Second operand has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 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) [2021-08-13 11:25:53,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:25:53,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-08-13 11:25:53,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:25:54,113 INFO L129 PetriNetUnfolder]: 558/1428 cut-off events. [2021-08-13 11:25:54,113 INFO L130 PetriNetUnfolder]: For 374/782 co-relation queries the response was YES. [2021-08-13 11:25:54,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 1428 events. 558/1428 cut-off events. For 374/782 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 12119 event pairs, 0 based on Foata normal form. 4/1326 useless extension candidates. Maximal degree in co-relation 4787. Up to 449 conditions per place. [2021-08-13 11:25:54,120 INFO L132 encePairwiseOnDemand]: 76/82 looper letters, 9 selfloop transitions, 1 changer transitions 119/190 dead transitions. [2021-08-13 11:25:54,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 190 transitions, 1253 flow [2021-08-13 11:25:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 11:25:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 11:25:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 492 transitions. [2021-08-13 11:25:54,122 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-08-13 11:25:54,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 492 transitions. [2021-08-13 11:25:54,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 492 transitions. [2021-08-13 11:25:54,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:25:54,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 492 transitions. [2021-08-13 11:25:54,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 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) [2021-08-13 11:25:54,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2021-08-13 11:25:54,124 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 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) [2021-08-13 11:25:54,124 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 54 predicate places. [2021-08-13 11:25:54,124 INFO L482 AbstractCegarLoop]: Abstraction has has 130 places, 190 transitions, 1253 flow [2021-08-13 11:25:54,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 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) [2021-08-13 11:25:54,124 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 11:25:54,125 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 11:25:54,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 11:25:54,125 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 11:25:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 11:25:54,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1166189423, now seen corresponding path program 2 times [2021-08-13 11:25:54,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 11:25:54,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388845627] [2021-08-13 11:25:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 11:25:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 11:25:54,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:54,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:54,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:54,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:54,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:54,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 11:25:54,175 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 11:25:54,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 11:25:54,181 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 11:25:54,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 11:25:54,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:54,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:54,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:54,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 11:25:54,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 11:25:54,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 11:25:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 11:25:54,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 11:25:54,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388845627] [2021-08-13 11:25:54,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388845627] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 11:25:54,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 11:25:54,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 11:25:54,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492497411] [2021-08-13 11:25:54,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 11:25:54,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 11:25:54,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 11:25:54,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-13 11:25:54,210 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-08-13 11:25:54,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 190 transitions, 1253 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2021-08-13 11:25:54,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 11:25:54,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-08-13 11:25:54,210 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 11:25:54,494 INFO L129 PetriNetUnfolder]: 934/2330 cut-off events. [2021-08-13 11:25:54,494 INFO L130 PetriNetUnfolder]: For 606/1164 co-relation queries the response was YES. [2021-08-13 11:25:54,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8018 conditions, 2330 events. 934/2330 cut-off events. For 606/1164 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 21951 event pairs, 0 based on Foata normal form. 10/2170 useless extension candidates. Maximal degree in co-relation 7963. Up to 755 conditions per place. [2021-08-13 11:25:54,503 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 205/205 dead transitions. [2021-08-13 11:25:54,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 205 transitions, 1483 flow [2021-08-13 11:25:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 11:25:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 11:25:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 744 transitions. [2021-08-13 11:25:54,505 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8248337028824834 [2021-08-13 11:25:54,505 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 744 transitions. [2021-08-13 11:25:54,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 744 transitions. [2021-08-13 11:25:54,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 11:25:54,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 744 transitions. [2021-08-13 11:25:54,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 67.63636363636364) internal successors, (744), 11 states have internal predecessors, (744), 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) [2021-08-13 11:25:54,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2021-08-13 11:25:54,508 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 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) [2021-08-13 11:25:54,508 INFO L348 CegarLoopForPetriNet]: 76 programPoint places, 62 predicate places. [2021-08-13 11:25:54,508 INFO L482 AbstractCegarLoop]: Abstraction has has 138 places, 205 transitions, 1483 flow [2021-08-13 11:25:54,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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) [2021-08-13 11:25:54,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown