/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:03:48,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:03:48,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:03:48,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:03:48,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:03:48,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:03:48,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:03:48,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:03:48,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:03:48,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:03:48,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:03:48,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:03:48,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:03:48,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:03:48,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:03:48,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:03:48,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:03:48,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:03:48,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:03:48,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:03:48,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:03:48,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:03:48,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:03:48,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:03:48,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 05:03:48,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 05:03:48,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 05:03:48,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 05:03:48,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 05:03:48,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 05:03:48,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:03:48,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:03:48,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:03:48,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:03:48,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:03:48,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:03:48,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:03:48,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:03:48,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:03:48,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:03:48,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:03:48,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 05:03:48,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:03:48,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:03:48,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:03:48,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:03:48,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:03:48,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:03:48,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:03:48,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:03:48,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:03:48,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:03:48,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:03:48,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:03:48,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:03:48,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:03:48,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:03:48,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:03:48,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:03:48,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:03:48,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:03:48,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:03:48,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:03:48,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:03:48,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:03:48,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:03:48,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:03:48,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:03:48,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:03:48,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:03:48,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:03:48,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:03:49,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:03:49,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:03:49,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:03:49,009 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:03:49,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-10-16 05:03:49,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb022c6e7/5205706335184e2c9e95dba84e20e346/FLAGc13a085be [2020-10-16 05:03:49,604 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:03:49,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-10-16 05:03:49,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb022c6e7/5205706335184e2c9e95dba84e20e346/FLAGc13a085be [2020-10-16 05:03:49,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb022c6e7/5205706335184e2c9e95dba84e20e346 [2020-10-16 05:03:49,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:03:49,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:03:49,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:03:49,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:03:49,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:03:49,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:03:49" (1/1) ... [2020-10-16 05:03:49,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4b4aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:49, skipping insertion in model container [2020-10-16 05:03:49,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:03:49" (1/1) ... [2020-10-16 05:03:49,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:03:49,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:03:50,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:03:50,424 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:03:50,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:03:50,572 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:03:50,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50 WrapperNode [2020-10-16 05:03:50,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:03:50,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:03:50,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:03:50,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:03:50,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:03:50,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:03:50,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:03:50,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:03:50,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (1/1) ... [2020-10-16 05:03:50,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:03:50,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:03:50,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:03:50,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:03:50,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (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 [2020-10-16 05:03:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:03:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 05:03:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:03:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:03:50,728 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 05:03:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 05:03:50,729 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 05:03:50,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 05:03:50,731 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 05:03:50,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 05:03:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 05:03:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:03:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:03:50,735 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:03:51,041 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:03:51,041 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 05:03:51,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:03:51 BoogieIcfgContainer [2020-10-16 05:03:51,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:03:51,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:03:51,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:03:51,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:03:51,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:03:49" (1/3) ... [2020-10-16 05:03:51,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22599252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:03:51, skipping insertion in model container [2020-10-16 05:03:51,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:03:50" (2/3) ... [2020-10-16 05:03:51,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22599252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:03:51, skipping insertion in model container [2020-10-16 05:03:51,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:03:51" (3/3) ... [2020-10-16 05:03:51,051 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-10-16 05:03:51,062 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:03:51,073 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:03:51,074 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:03:51,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,116 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,117 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,127 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,128 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,128 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,135 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,136 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,136 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,138 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,139 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,139 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:03:51,154 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:03:51,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:03:51,172 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:03:51,172 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:03:51,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:03:51,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:03:51,173 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:03:51,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:03:51,173 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:03:51,186 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:03:51,229 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 05:03:51,230 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:51,235 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 05:03:51,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 05:03:51,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 55 transitions, 119 flow [2020-10-16 05:03:51,253 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:03:51,256 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:03:51,259 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 55 transitions, 119 flow [2020-10-16 05:03:51,260 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions, 119 flow [2020-10-16 05:03:51,295 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-16 05:03:51,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:51,296 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2020-10-16 05:03:51,300 INFO L117 LiptonReduction]: Number of co-enabled transitions 864 [2020-10-16 05:03:52,643 INFO L132 LiptonReduction]: Checked pairs total: 1700 [2020-10-16 05:03:52,643 INFO L134 LiptonReduction]: Total number of compositions: 43 [2020-10-16 05:03:52,646 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1395 [2020-10-16 05:03:52,654 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2020-10-16 05:03:52,654 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:52,654 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:52,655 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:52,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:52,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:52,661 INFO L82 PathProgramCache]: Analyzing trace with hash -304121032, now seen corresponding path program 1 times [2020-10-16 05:03:52,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:52,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724865146] [2020-10-16 05:03:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:52,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724865146] [2020-10-16 05:03:52,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:52,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:03:52,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011900680] [2020-10-16 05:03:52,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 05:03:52,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:52,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 05:03:52,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 05:03:52,875 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 112 [2020-10-16 05:03:52,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states. [2020-10-16 05:03:52,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:52,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 112 [2020-10-16 05:03:52,879 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:52,894 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2020-10-16 05:03:52,894 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:52,895 INFO L80 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2020-10-16 05:03:52,896 INFO L132 encePairwiseOnDemand]: 111/112 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2020-10-16 05:03:52,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 43 flow [2020-10-16 05:03:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 05:03:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 05:03:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2020-10-16 05:03:52,913 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.9508928571428571 [2020-10-16 05:03:52,913 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2020-10-16 05:03:52,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2020-10-16 05:03:52,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:52,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2020-10-16 05:03:52,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 05:03:52,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 05:03:52,935 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 05:03:52,938 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 2 states and 213 transitions. [2020-10-16 05:03:52,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 43 flow [2020-10-16 05:03:52,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 40 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:03:52,944 INFO L241 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2020-10-16 05:03:52,947 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2020-10-16 05:03:52,948 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2020-10-16 05:03:52,949 INFO L481 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2020-10-16 05:03:52,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 05:03:52,953 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:52,953 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:52,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:03:52,961 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:52,961 INFO L82 PathProgramCache]: Analyzing trace with hash -837817873, now seen corresponding path program 1 times [2020-10-16 05:03:52,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:52,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008252180] [2020-10-16 05:03:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008252180] [2020-10-16 05:03:53,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:03:53,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434681264] [2020-10-16 05:03:53,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:03:53,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:03:53,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:03:53,068 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 05:03:53,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states. [2020-10-16 05:03:53,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 05:03:53,069 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,089 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2020-10-16 05:03:53,089 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:03:53,090 INFO L80 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 25 events. 3/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 1 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 41. Up to 10 conditions per place. [2020-10-16 05:03:53,090 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 3 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2020-10-16 05:03:53,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 56 flow [2020-10-16 05:03:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:03:53,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:03:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2020-10-16 05:03:53,094 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8690476190476191 [2020-10-16 05:03:53,094 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2020-10-16 05:03:53,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2020-10-16 05:03:53,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2020-10-16 05:03:53,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:03:53,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:03:53,098 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:03:53,098 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 292 transitions. [2020-10-16 05:03:53,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 56 flow [2020-10-16 05:03:53,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 05:03:53,100 INFO L241 Difference]: Finished difference. Result has 28 places, 19 transitions, 59 flow [2020-10-16 05:03:53,101 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2020-10-16 05:03:53,101 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 05:03:53,101 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 59 flow [2020-10-16 05:03:53,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:03:53,102 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,102 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:03:53,102 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,103 INFO L82 PathProgramCache]: Analyzing trace with hash -202550729, now seen corresponding path program 1 times [2020-10-16 05:03:53,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979697896] [2020-10-16 05:03:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979697896] [2020-10-16 05:03:53,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:03:53,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148378772] [2020-10-16 05:03:53,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:03:53,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:03:53,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:03:53,203 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 112 [2020-10-16 05:03:53,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 59 flow. Second operand 3 states. [2020-10-16 05:03:53,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 112 [2020-10-16 05:03:53,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,221 INFO L129 PetriNetUnfolder]: 3/24 cut-off events. [2020-10-16 05:03:53,222 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 05:03:53,222 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 24 events. 3/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 1 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 47. Up to 10 conditions per place. [2020-10-16 05:03:53,223 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 1 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2020-10-16 05:03:53,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 65 flow [2020-10-16 05:03:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:03:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:03:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2020-10-16 05:03:53,226 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2020-10-16 05:03:53,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2020-10-16 05:03:53,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2020-10-16 05:03:53,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2020-10-16 05:03:53,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:03:53,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:03:53,232 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:03:53,232 INFO L185 Difference]: Start difference. First operand has 28 places, 19 transitions, 59 flow. Second operand 3 states and 286 transitions. [2020-10-16 05:03:53,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 65 flow [2020-10-16 05:03:53,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 19 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:03:53,234 INFO L241 Difference]: Finished difference. Result has 30 places, 19 transitions, 64 flow [2020-10-16 05:03:53,234 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2020-10-16 05:03:53,234 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2020-10-16 05:03:53,234 INFO L481 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 64 flow [2020-10-16 05:03:53,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:03:53,235 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,235 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:03:53,235 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1984110550, now seen corresponding path program 1 times [2020-10-16 05:03:53,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55956652] [2020-10-16 05:03:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55956652] [2020-10-16 05:03:53,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:03:53,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937931612] [2020-10-16 05:03:53,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:03:53,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:03:53,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:03:53,324 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2020-10-16 05:03:53,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 64 flow. Second operand 3 states. [2020-10-16 05:03:53,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2020-10-16 05:03:53,324 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,340 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2020-10-16 05:03:53,340 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 05:03:53,341 INFO L80 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 41 events. 9/41 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 92 event pairs, 4 based on Foata normal form. 3/40 useless extension candidates. Maximal degree in co-relation 88. Up to 16 conditions per place. [2020-10-16 05:03:53,342 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 3 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 05:03:53,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 80 flow [2020-10-16 05:03:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:03:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:03:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2020-10-16 05:03:53,344 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8422619047619048 [2020-10-16 05:03:53,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2020-10-16 05:03:53,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2020-10-16 05:03:53,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2020-10-16 05:03:53,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:03:53,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:03:53,346 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:03:53,346 INFO L185 Difference]: Start difference. First operand has 30 places, 19 transitions, 64 flow. Second operand 3 states and 283 transitions. [2020-10-16 05:03:53,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 80 flow [2020-10-16 05:03:53,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 05:03:53,348 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 79 flow [2020-10-16 05:03:53,348 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2020-10-16 05:03:53,349 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2020-10-16 05:03:53,349 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 79 flow [2020-10-16 05:03:53,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:03:53,349 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,349 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:03:53,350 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,350 INFO L82 PathProgramCache]: Analyzing trace with hash 299736864, now seen corresponding path program 1 times [2020-10-16 05:03:53,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571972929] [2020-10-16 05:03:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571972929] [2020-10-16 05:03:53,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:03:53,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070316335] [2020-10-16 05:03:53,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:03:53,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:03:53,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:03:53,384 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2020-10-16 05:03:53,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 79 flow. Second operand 3 states. [2020-10-16 05:03:53,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2020-10-16 05:03:53,385 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,402 INFO L129 PetriNetUnfolder]: 4/36 cut-off events. [2020-10-16 05:03:53,403 INFO L130 PetriNetUnfolder]: For 66/101 co-relation queries the response was YES. [2020-10-16 05:03:53,403 INFO L80 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 36 events. 4/36 cut-off events. For 66/101 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 92 event pairs, 2 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 85. Up to 13 conditions per place. [2020-10-16 05:03:53,404 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2020-10-16 05:03:53,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 21 transitions, 91 flow [2020-10-16 05:03:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:03:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:03:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2020-10-16 05:03:53,406 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2020-10-16 05:03:53,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2020-10-16 05:03:53,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2020-10-16 05:03:53,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2020-10-16 05:03:53,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:03:53,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:03:53,408 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:03:53,408 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 79 flow. Second operand 3 states and 282 transitions. [2020-10-16 05:03:53,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 21 transitions, 91 flow [2020-10-16 05:03:53,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:03:53,410 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 87 flow [2020-10-16 05:03:53,410 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 05:03:53,411 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2020-10-16 05:03:53,411 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 87 flow [2020-10-16 05:03:53,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:03:53,411 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,411 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:03:53,412 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1377860362, now seen corresponding path program 1 times [2020-10-16 05:03:53,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699961843] [2020-10-16 05:03:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699961843] [2020-10-16 05:03:53,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:03:53,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873210881] [2020-10-16 05:03:53,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:03:53,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:03:53,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:03:53,452 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2020-10-16 05:03:53,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 87 flow. Second operand 4 states. [2020-10-16 05:03:53,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2020-10-16 05:03:53,453 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,482 INFO L129 PetriNetUnfolder]: 5/49 cut-off events. [2020-10-16 05:03:53,483 INFO L130 PetriNetUnfolder]: For 179/196 co-relation queries the response was YES. [2020-10-16 05:03:53,483 INFO L80 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 49 events. 5/49 cut-off events. For 179/196 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 151 event pairs, 2 based on Foata normal form. 5/53 useless extension candidates. Maximal degree in co-relation 116. Up to 17 conditions per place. [2020-10-16 05:03:53,484 INFO L132 encePairwiseOnDemand]: 108/112 looper letters, 1 selfloop transitions, 3 changer transitions 1/22 dead transitions. [2020-10-16 05:03:53,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 100 flow [2020-10-16 05:03:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:03:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:03:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2020-10-16 05:03:53,486 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8191964285714286 [2020-10-16 05:03:53,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2020-10-16 05:03:53,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2020-10-16 05:03:53,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2020-10-16 05:03:53,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:03:53,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:03:53,489 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:03:53,489 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 87 flow. Second operand 4 states and 367 transitions. [2020-10-16 05:03:53,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 100 flow [2020-10-16 05:03:53,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 22 transitions, 95 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:03:53,491 INFO L241 Difference]: Finished difference. Result has 37 places, 21 transitions, 96 flow [2020-10-16 05:03:53,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2020-10-16 05:03:53,491 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2020-10-16 05:03:53,492 INFO L481 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 96 flow [2020-10-16 05:03:53,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:03:53,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:03:53,492 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,493 INFO L82 PathProgramCache]: Analyzing trace with hash 235072970, now seen corresponding path program 1 times [2020-10-16 05:03:53,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290418788] [2020-10-16 05:03:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290418788] [2020-10-16 05:03:53,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:03:53,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790119031] [2020-10-16 05:03:53,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:03:53,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:03:53,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:03:53,546 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:03:53,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 96 flow. Second operand 4 states. [2020-10-16 05:03:53,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:03:53,547 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,596 INFO L129 PetriNetUnfolder]: 65/154 cut-off events. [2020-10-16 05:03:53,596 INFO L130 PetriNetUnfolder]: For 852/929 co-relation queries the response was YES. [2020-10-16 05:03:53,598 INFO L80 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 154 events. 65/154 cut-off events. For 852/929 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 667 event pairs, 14 based on Foata normal form. 21/157 useless extension candidates. Maximal degree in co-relation 424. Up to 73 conditions per place. [2020-10-16 05:03:53,599 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 8 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2020-10-16 05:03:53,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 136 flow [2020-10-16 05:03:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:03:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:03:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 339 transitions. [2020-10-16 05:03:53,601 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7566964285714286 [2020-10-16 05:03:53,601 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 339 transitions. [2020-10-16 05:03:53,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 339 transitions. [2020-10-16 05:03:53,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 339 transitions. [2020-10-16 05:03:53,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:03:53,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:03:53,604 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:03:53,604 INFO L185 Difference]: Start difference. First operand has 37 places, 21 transitions, 96 flow. Second operand 4 states and 339 transitions. [2020-10-16 05:03:53,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 136 flow [2020-10-16 05:03:53,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 124 flow, removed 2 selfloop flow, removed 4 redundant places. [2020-10-16 05:03:53,607 INFO L241 Difference]: Finished difference. Result has 38 places, 25 transitions, 122 flow [2020-10-16 05:03:53,607 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2020-10-16 05:03:53,608 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2020-10-16 05:03:53,608 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 122 flow [2020-10-16 05:03:53,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:03:53,608 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,608 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:03:53,609 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,609 INFO L82 PathProgramCache]: Analyzing trace with hash -507782499, now seen corresponding path program 1 times [2020-10-16 05:03:53,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300026776] [2020-10-16 05:03:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300026776] [2020-10-16 05:03:53,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:03:53,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970071154] [2020-10-16 05:03:53,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:03:53,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:03:53,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:03:53,667 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:03:53,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 122 flow. Second operand 5 states. [2020-10-16 05:03:53,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:03:53,668 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,733 INFO L129 PetriNetUnfolder]: 45/130 cut-off events. [2020-10-16 05:03:53,733 INFO L130 PetriNetUnfolder]: For 487/826 co-relation queries the response was YES. [2020-10-16 05:03:53,734 INFO L80 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 130 events. 45/130 cut-off events. For 487/826 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 576 event pairs, 1 based on Foata normal form. 36/148 useless extension candidates. Maximal degree in co-relation 440. Up to 92 conditions per place. [2020-10-16 05:03:53,735 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 9 selfloop transitions, 8 changer transitions 0/32 dead transitions. [2020-10-16 05:03:53,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 185 flow [2020-10-16 05:03:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 05:03:53,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-10-16 05:03:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2020-10-16 05:03:53,737 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7571428571428571 [2020-10-16 05:03:53,737 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2020-10-16 05:03:53,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2020-10-16 05:03:53,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2020-10-16 05:03:53,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 6 states. [2020-10-16 05:03:53,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 6 states. [2020-10-16 05:03:53,740 INFO L81 ComplementDD]: Finished complementDD. Result 6 states. [2020-10-16 05:03:53,740 INFO L185 Difference]: Start difference. First operand has 38 places, 25 transitions, 122 flow. Second operand 5 states and 424 transitions. [2020-10-16 05:03:53,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 185 flow [2020-10-16 05:03:53,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 32 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:03:53,743 INFO L241 Difference]: Finished difference. Result has 43 places, 29 transitions, 174 flow [2020-10-16 05:03:53,744 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2020-10-16 05:03:53,744 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2020-10-16 05:03:53,744 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 174 flow [2020-10-16 05:03:53,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:03:53,744 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,744 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:03:53,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash 2090520510, now seen corresponding path program 1 times [2020-10-16 05:03:53,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633253745] [2020-10-16 05:03:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633253745] [2020-10-16 05:03:53,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:03:53,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672961930] [2020-10-16 05:03:53,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:03:53,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:03:53,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:03:53,770 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2020-10-16 05:03:53,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 174 flow. Second operand 3 states. [2020-10-16 05:03:53,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2020-10-16 05:03:53,771 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,795 INFO L129 PetriNetUnfolder]: 45/141 cut-off events. [2020-10-16 05:03:53,796 INFO L130 PetriNetUnfolder]: For 578/790 co-relation queries the response was YES. [2020-10-16 05:03:53,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 141 events. 45/141 cut-off events. For 578/790 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 724 event pairs, 0 based on Foata normal form. 15/135 useless extension candidates. Maximal degree in co-relation 508. Up to 102 conditions per place. [2020-10-16 05:03:53,797 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 3 selfloop transitions, 3 changer transitions 3/29 dead transitions. [2020-10-16 05:03:53,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 186 flow [2020-10-16 05:03:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:03:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:03:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2020-10-16 05:03:53,799 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2020-10-16 05:03:53,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2020-10-16 05:03:53,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2020-10-16 05:03:53,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2020-10-16 05:03:53,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:03:53,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:03:53,801 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:03:53,801 INFO L185 Difference]: Start difference. First operand has 43 places, 29 transitions, 174 flow. Second operand 3 states and 291 transitions. [2020-10-16 05:03:53,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 186 flow [2020-10-16 05:03:53,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 174 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 05:03:53,805 INFO L241 Difference]: Finished difference. Result has 44 places, 26 transitions, 157 flow [2020-10-16 05:03:53,805 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2020-10-16 05:03:53,805 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2020-10-16 05:03:53,806 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 157 flow [2020-10-16 05:03:53,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:03:53,806 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:03:53,806 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:03:53,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:03:53,806 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:03:53,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:03:53,807 INFO L82 PathProgramCache]: Analyzing trace with hash 579252735, now seen corresponding path program 1 times [2020-10-16 05:03:53,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:03:53,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127409630] [2020-10-16 05:03:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:03:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:03:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:03:53,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127409630] [2020-10-16 05:03:53,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:03:53,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 05:03:53,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354906865] [2020-10-16 05:03:53,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 05:03:53,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:03:53,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 05:03:53,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 05:03:53,854 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2020-10-16 05:03:53,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 157 flow. Second operand 6 states. [2020-10-16 05:03:53,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:03:53,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2020-10-16 05:03:53,855 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:03:53,911 INFO L129 PetriNetUnfolder]: 15/70 cut-off events. [2020-10-16 05:03:53,911 INFO L130 PetriNetUnfolder]: For 200/259 co-relation queries the response was YES. [2020-10-16 05:03:53,912 INFO L80 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 70 events. 15/70 cut-off events. For 200/259 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 259 event pairs, 0 based on Foata normal form. 24/91 useless extension candidates. Maximal degree in co-relation 260. Up to 31 conditions per place. [2020-10-16 05:03:53,912 INFO L132 encePairwiseOnDemand]: 106/112 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2020-10-16 05:03:53,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 26 transitions, 165 flow [2020-10-16 05:03:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:03:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:03:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 498 transitions. [2020-10-16 05:03:53,915 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7410714285714286 [2020-10-16 05:03:53,915 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 498 transitions. [2020-10-16 05:03:53,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 498 transitions. [2020-10-16 05:03:53,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:03:53,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 498 transitions. [2020-10-16 05:03:53,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:03:53,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:03:53,918 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:03:53,918 INFO L185 Difference]: Start difference. First operand has 44 places, 26 transitions, 157 flow. Second operand 6 states and 498 transitions. [2020-10-16 05:03:53,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 26 transitions, 165 flow [2020-10-16 05:03:53,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 137 flow, removed 1 selfloop flow, removed 7 redundant places. [2020-10-16 05:03:53,920 INFO L241 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2020-10-16 05:03:53,920 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2020-10-16 05:03:53,920 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2020-10-16 05:03:53,921 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2020-10-16 05:03:53,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 05:03:53,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:03:53,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:03:53 BasicIcfg [2020-10-16 05:03:53,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 05:03:53,928 INFO L168 Benchmark]: Toolchain (without parser) took 4034.64 ms. Allocated memory was 252.7 MB in the beginning and 371.7 MB in the end (delta: 119.0 MB). Free memory was 207.2 MB in the beginning and 215.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 110.6 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:53,928 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 05:03:53,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.44 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 207.2 MB in the beginning and 270.8 MB in the end (delta: -63.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:53,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.51 ms. Allocated memory is still 317.7 MB. Free memory was 270.8 MB in the beginning and 268.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:53,930 INFO L168 Benchmark]: Boogie Preprocessor took 28.58 ms. Allocated memory is still 317.7 MB. Free memory was 268.3 MB in the beginning and 265.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:53,931 INFO L168 Benchmark]: RCFGBuilder took 392.60 ms. Allocated memory is still 317.7 MB. Free memory was 265.8 MB in the beginning and 243.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:53,932 INFO L168 Benchmark]: TraceAbstraction took 2880.45 ms. Allocated memory was 317.7 MB in the beginning and 371.7 MB in the end (delta: 54.0 MB). Free memory was 243.9 MB in the beginning and 215.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 14.2 GB. [2020-10-16 05:03:53,936 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 252.7 MB. Free memory is still 229.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 679.44 ms. Allocated memory was 252.7 MB in the beginning and 317.7 MB in the end (delta: 65.0 MB). Free memory was 207.2 MB in the beginning and 270.8 MB in the end (delta: -63.6 MB). Peak memory consumption was 29.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.51 ms. Allocated memory is still 317.7 MB. Free memory was 270.8 MB in the beginning and 268.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.58 ms. Allocated memory is still 317.7 MB. Free memory was 268.3 MB in the beginning and 265.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 392.60 ms. Allocated memory is still 317.7 MB. Free memory was 265.8 MB in the beginning and 243.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2880.45 ms. Allocated memory was 317.7 MB in the beginning and 371.7 MB in the end (delta: 54.0 MB). Free memory was 243.9 MB in the beginning and 215.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 621 VarBasedMoverChecksPositive, 56 VarBasedMoverChecksNegative, 10 SemBasedMoverChecksPositive, 46 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 95 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 64 PlacesBefore, 27 PlacesAfterwards, 55 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, 1700 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 35 SDtfs, 7 SDslu, 10 SDs, 0 SdLazy, 70 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 2788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...