/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:34:19,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:34:19,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:34:19,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:34:19,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:34:19,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:34:19,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:34:19,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:34:19,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:34:19,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:34:19,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:34:19,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:34:19,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:34:19,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:34:19,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:34:19,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:34:19,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:34:19,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:34:19,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:34:19,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:34:19,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:34:19,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:34:19,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:34:19,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:34:19,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:34:19,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:34:19,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:34:19,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:34:19,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:34:19,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:34:19,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:34:19,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:34:19,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:34:19,619 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:34:19,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:34:19,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:34:19,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:34:19,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:34:19,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:34:19,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:34:19,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:34:19,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:34:19,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:34:19,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:34:19,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:34:19,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:34:19,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:34:19,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:34:19,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:34:19,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:34:19,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:34:19,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:34:19,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:34:19,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:34:19,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:34:19,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:34:19,623 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:34:19,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:34:19,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:34:19,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:34:19,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:34:19,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:34:19,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:34:19,991 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:34:19,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2021-03-11 02:34:20,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cdfd02c/8de727a9a0a64814bd4348962c5a7787/FLAGd6af32682 [2021-03-11 02:34:20,521 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:34:20,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i [2021-03-11 02:34:20,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cdfd02c/8de727a9a0a64814bd4348962c5a7787/FLAGd6af32682 [2021-03-11 02:34:20,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21cdfd02c/8de727a9a0a64814bd4348962c5a7787 [2021-03-11 02:34:20,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:34:20,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:34:20,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:34:20,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:34:20,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:34:20,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:34:20" (1/1) ... [2021-03-11 02:34:20,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c99ba16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:20, skipping insertion in model container [2021-03-11 02:34:20,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:34:20" (1/1) ... [2021-03-11 02:34:20,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:34:20,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:34:21,037 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i[949,962] [2021-03-11 02:34:21,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:34:21,242 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:34:21,252 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.opt.i[949,962] [2021-03-11 02:34:21,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:34:21,367 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:34:21,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21 WrapperNode [2021-03-11 02:34:21,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:34:21,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:34:21,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:34:21,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:34:21,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:34:21,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:34:21,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:34:21,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:34:21,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... [2021-03-11 02:34:21,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:34:21,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:34:21,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:34:21,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:34:21,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:34:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:34:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:34:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:34:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:34:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:34:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:34:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:34:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:34:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:34:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:34:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 02:34:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 02:34:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:34:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:34:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:34:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:34:21,510 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:34:21,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:34:21,769 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:34:21,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:21 BoogieIcfgContainer [2021-03-11 02:34:21,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:34:21,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:34:21,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:34:21,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:34:21,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:34:20" (1/3) ... [2021-03-11 02:34:21,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8bbabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:34:21, skipping insertion in model container [2021-03-11 02:34:21,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:21" (2/3) ... [2021-03-11 02:34:21,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8bbabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:34:21, skipping insertion in model container [2021-03-11 02:34:21,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:21" (3/3) ... [2021-03-11 02:34:21,778 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2021-03-11 02:34:21,782 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:34:21,785 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:34:21,786 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:34:21,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,814 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,814 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,816 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,816 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,817 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,817 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,817 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,817 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,817 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,818 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,819 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,820 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,820 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,821 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,821 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,821 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,821 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,821 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,822 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,822 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,822 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,822 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,822 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,823 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,823 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,823 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,825 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,839 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,839 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,839 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,840 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,845 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,850 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,851 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,851 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,851 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:21,854 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:34:21,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 02:34:21,890 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:34:21,890 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:34:21,890 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:34:21,890 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:34:21,891 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:34:21,891 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:34:21,891 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:34:21,891 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:34:21,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 02:34:21,939 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-03-11 02:34:21,939 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:21,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-11 02:34:21,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 02:34:21,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 68 transitions, 148 flow [2021-03-11 02:34:21,963 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-03-11 02:34:21,963 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:21,963 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:21,964 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:21,964 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:21,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:21,969 INFO L82 PathProgramCache]: Analyzing trace with hash 117794534, now seen corresponding path program 1 times [2021-03-11 02:34:21,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:21,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312789193] [2021-03-11 02:34:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:22,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:22,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:22,275 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:22,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:22,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:22,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:22,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:22,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312789193] [2021-03-11 02:34:22,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:22,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:34:22,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431669451] [2021-03-11 02:34:22,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:34:22,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:22,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:34:22,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:34:22,370 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 86 [2021-03-11 02:34:22,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:22,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:22,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 86 [2021-03-11 02:34:22,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:22,542 INFO L129 PetriNetUnfolder]: 3/90 cut-off events. [2021-03-11 02:34:22,542 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:22,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 90 events. 3/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 4/93 useless extension candidates. Maximal degree in co-relation 93. Up to 7 conditions per place. [2021-03-11 02:34:22,544 INFO L132 encePairwiseOnDemand]: 79/86 looper letters, 6 selfloop transitions, 2 changer transitions 11/77 dead transitions. [2021-03-11 02:34:22,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 202 flow [2021-03-11 02:34:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:34:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:34:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 688 transitions. [2021-03-11 02:34:22,563 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-03-11 02:34:22,563 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 688 transitions. [2021-03-11 02:34:22,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 688 transitions. [2021-03-11 02:34:22,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:22,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 688 transitions. [2021-03-11 02:34:22,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.44444444444444) internal successors, (688), 9 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:22,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:22,583 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:22,585 INFO L185 Difference]: Start difference. First operand has 80 places, 68 transitions, 148 flow. Second operand 9 states and 688 transitions. [2021-03-11 02:34:22,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 202 flow [2021-03-11 02:34:22,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 77 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 02:34:22,594 INFO L241 Difference]: Finished difference. Result has 91 places, 66 transitions, 160 flow [2021-03-11 02:34:22,596 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2021-03-11 02:34:22,596 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 11 predicate places. [2021-03-11 02:34:22,596 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 160 flow [2021-03-11 02:34:22,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 75.16666666666667) internal successors, (451), 6 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:22,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:22,597 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:22,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:34:22,598 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:22,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:22,599 INFO L82 PathProgramCache]: Analyzing trace with hash -37859065, now seen corresponding path program 1 times [2021-03-11 02:34:22,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:22,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578776051] [2021-03-11 02:34:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:22,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:22,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:22,705 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:34:22,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:34:22,725 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:22,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:22,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:22,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:22,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:22,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:22,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578776051] [2021-03-11 02:34:22,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:22,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:22,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776136942] [2021-03-11 02:34:22,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:22,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:22,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:22,778 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 86 [2021-03-11 02:34:22,779 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:22,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:22,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 86 [2021-03-11 02:34:22,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:23,116 INFO L129 PetriNetUnfolder]: 165/493 cut-off events. [2021-03-11 02:34:23,116 INFO L130 PetriNetUnfolder]: For 146/152 co-relation queries the response was YES. [2021-03-11 02:34:23,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 493 events. 165/493 cut-off events. For 146/152 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2603 event pairs, 2 based on Foata normal form. 17/493 useless extension candidates. Maximal degree in co-relation 952. Up to 112 conditions per place. [2021-03-11 02:34:23,125 INFO L132 encePairwiseOnDemand]: 74/86 looper letters, 17 selfloop transitions, 10 changer transitions 44/122 dead transitions. [2021-03-11 02:34:23,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 457 flow [2021-03-11 02:34:23,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:23,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 945 transitions. [2021-03-11 02:34:23,129 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8452593917710197 [2021-03-11 02:34:23,129 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 945 transitions. [2021-03-11 02:34:23,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 945 transitions. [2021-03-11 02:34:23,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:23,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 945 transitions. [2021-03-11 02:34:23,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.6923076923077) internal successors, (945), 13 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,134 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,135 INFO L185 Difference]: Start difference. First operand has 91 places, 66 transitions, 160 flow. Second operand 13 states and 945 transitions. [2021-03-11 02:34:23,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 457 flow [2021-03-11 02:34:23,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 403 flow, removed 24 selfloop flow, removed 8 redundant places. [2021-03-11 02:34:23,145 INFO L241 Difference]: Finished difference. Result has 99 places, 71 transitions, 226 flow [2021-03-11 02:34:23,145 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=226, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-03-11 02:34:23,167 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 19 predicate places. [2021-03-11 02:34:23,168 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 226 flow [2021-03-11 02:34:23,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,169 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:23,169 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:23,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:34:23,169 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2079849256, now seen corresponding path program 1 times [2021-03-11 02:34:23,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:23,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651745604] [2021-03-11 02:34:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:23,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:23,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:23,295 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:34:23,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:34:23,306 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:23,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:23,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:23,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:23,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:23,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651745604] [2021-03-11 02:34:23,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:23,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:23,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856891145] [2021-03-11 02:34:23,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:23,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:23,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:23,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:23,352 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 86 [2021-03-11 02:34:23,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:23,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 86 [2021-03-11 02:34:23,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:23,571 INFO L129 PetriNetUnfolder]: 83/323 cut-off events. [2021-03-11 02:34:23,571 INFO L130 PetriNetUnfolder]: For 614/825 co-relation queries the response was YES. [2021-03-11 02:34:23,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 323 events. 83/323 cut-off events. For 614/825 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1509 event pairs, 17 based on Foata normal form. 14/329 useless extension candidates. Maximal degree in co-relation 909. Up to 88 conditions per place. [2021-03-11 02:34:23,575 INFO L132 encePairwiseOnDemand]: 77/86 looper letters, 22 selfloop transitions, 7 changer transitions 28/108 dead transitions. [2021-03-11 02:34:23,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 108 transitions, 572 flow [2021-03-11 02:34:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:34:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:34:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 923 transitions. [2021-03-11 02:34:23,577 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8255813953488372 [2021-03-11 02:34:23,578 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 923 transitions. [2021-03-11 02:34:23,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 923 transitions. [2021-03-11 02:34:23,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:23,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 923 transitions. [2021-03-11 02:34:23,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.0) internal successors, (923), 13 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,583 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 86.0) internal successors, (1204), 14 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,583 INFO L185 Difference]: Start difference. First operand has 99 places, 71 transitions, 226 flow. Second operand 13 states and 923 transitions. [2021-03-11 02:34:23,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 108 transitions, 572 flow [2021-03-11 02:34:23,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 108 transitions, 516 flow, removed 28 selfloop flow, removed 6 redundant places. [2021-03-11 02:34:23,590 INFO L241 Difference]: Finished difference. Result has 108 places, 74 transitions, 288 flow [2021-03-11 02:34:23,590 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=288, PETRI_PLACES=108, PETRI_TRANSITIONS=74} [2021-03-11 02:34:23,591 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 28 predicate places. [2021-03-11 02:34:23,591 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 74 transitions, 288 flow [2021-03-11 02:34:23,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,591 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:23,591 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:23,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:34:23,591 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:23,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:23,593 INFO L82 PathProgramCache]: Analyzing trace with hash 659005025, now seen corresponding path program 1 times [2021-03-11 02:34:23,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:23,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524145346] [2021-03-11 02:34:23,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:23,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:23,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:23,672 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:34:23,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:34:23,681 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:23,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:23,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:23,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:23,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:23,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524145346] [2021-03-11 02:34:23,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:23,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:23,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711653347] [2021-03-11 02:34:23,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:23,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:23,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:23,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:23,719 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 86 [2021-03-11 02:34:23,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 74 transitions, 288 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:23,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 86 [2021-03-11 02:34:23,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:23,860 INFO L129 PetriNetUnfolder]: 55/299 cut-off events. [2021-03-11 02:34:23,860 INFO L130 PetriNetUnfolder]: For 821/1030 co-relation queries the response was YES. [2021-03-11 02:34:23,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 299 events. 55/299 cut-off events. For 821/1030 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1485 event pairs, 16 based on Foata normal form. 14/307 useless extension candidates. Maximal degree in co-relation 855. Up to 59 conditions per place. [2021-03-11 02:34:23,863 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 18 selfloop transitions, 12 changer transitions 17/98 dead transitions. [2021-03-11 02:34:23,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 570 flow [2021-03-11 02:34:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:34:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:34:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 713 transitions. [2021-03-11 02:34:23,866 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8290697674418605 [2021-03-11 02:34:23,866 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 713 transitions. [2021-03-11 02:34:23,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 713 transitions. [2021-03-11 02:34:23,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:23,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 713 transitions. [2021-03-11 02:34:23,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.3) internal successors, (713), 10 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,870 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,870 INFO L185 Difference]: Start difference. First operand has 108 places, 74 transitions, 288 flow. Second operand 10 states and 713 transitions. [2021-03-11 02:34:23,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 570 flow [2021-03-11 02:34:23,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 498 flow, removed 34 selfloop flow, removed 7 redundant places. [2021-03-11 02:34:23,879 INFO L241 Difference]: Finished difference. Result has 109 places, 76 transitions, 321 flow [2021-03-11 02:34:23,880 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=109, PETRI_TRANSITIONS=76} [2021-03-11 02:34:23,880 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 29 predicate places. [2021-03-11 02:34:23,880 INFO L480 AbstractCegarLoop]: Abstraction has has 109 places, 76 transitions, 321 flow [2021-03-11 02:34:23,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:23,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:23,880 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:23,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:34:23,881 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1907485319, now seen corresponding path program 1 times [2021-03-11 02:34:23,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:23,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406836835] [2021-03-11 02:34:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:23,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:23,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:23,964 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:34:23,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:34:23,973 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:23,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:23,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:23,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:24,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:24,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:24,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406836835] [2021-03-11 02:34:24,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:24,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:24,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809715292] [2021-03-11 02:34:24,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:24,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:24,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:24,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:24,019 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 86 [2021-03-11 02:34:24,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 76 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:24,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 86 [2021-03-11 02:34:24,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:24,384 INFO L129 PetriNetUnfolder]: 200/745 cut-off events. [2021-03-11 02:34:24,385 INFO L130 PetriNetUnfolder]: For 2280/3024 co-relation queries the response was YES. [2021-03-11 02:34:24,389 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 745 events. 200/745 cut-off events. For 2280/3024 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5019 event pairs, 17 based on Foata normal form. 28/763 useless extension candidates. Maximal degree in co-relation 2113. Up to 120 conditions per place. [2021-03-11 02:34:24,394 INFO L132 encePairwiseOnDemand]: 72/86 looper letters, 34 selfloop transitions, 31 changer transitions 46/160 dead transitions. [2021-03-11 02:34:24,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 160 transitions, 1251 flow [2021-03-11 02:34:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 02:34:24,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 02:34:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1193 transitions. [2021-03-11 02:34:24,398 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8160054719562243 [2021-03-11 02:34:24,398 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1193 transitions. [2021-03-11 02:34:24,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1193 transitions. [2021-03-11 02:34:24,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:24,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1193 transitions. [2021-03-11 02:34:24,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.17647058823529) internal successors, (1193), 17 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 86.0) internal successors, (1548), 18 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,407 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 86.0) internal successors, (1548), 18 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,407 INFO L185 Difference]: Start difference. First operand has 109 places, 76 transitions, 321 flow. Second operand 17 states and 1193 transitions. [2021-03-11 02:34:24,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 160 transitions, 1251 flow [2021-03-11 02:34:24,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 1133 flow, removed 40 selfloop flow, removed 7 redundant places. [2021-03-11 02:34:24,414 INFO L241 Difference]: Finished difference. Result has 128 places, 95 transitions, 645 flow [2021-03-11 02:34:24,415 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=645, PETRI_PLACES=128, PETRI_TRANSITIONS=95} [2021-03-11 02:34:24,415 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 48 predicate places. [2021-03-11 02:34:24,415 INFO L480 AbstractCegarLoop]: Abstraction has has 128 places, 95 transitions, 645 flow [2021-03-11 02:34:24,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,415 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:24,416 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:24,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:34:24,416 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1770059001, now seen corresponding path program 2 times [2021-03-11 02:34:24,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:24,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514204586] [2021-03-11 02:34:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:24,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:24,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:24,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:24,500 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:24,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:24,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:24,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:24,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:24,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514204586] [2021-03-11 02:34:24,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:24,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:24,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201686669] [2021-03-11 02:34:24,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:24,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:24,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:24,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:24,544 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 86 [2021-03-11 02:34:24,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 95 transitions, 645 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:24,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 86 [2021-03-11 02:34:24,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:24,747 INFO L129 PetriNetUnfolder]: 119/514 cut-off events. [2021-03-11 02:34:24,747 INFO L130 PetriNetUnfolder]: For 4699/5673 co-relation queries the response was YES. [2021-03-11 02:34:24,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 514 events. 119/514 cut-off events. For 4699/5673 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3279 event pairs, 9 based on Foata normal form. 33/537 useless extension candidates. Maximal degree in co-relation 2209. Up to 110 conditions per place. [2021-03-11 02:34:24,753 INFO L132 encePairwiseOnDemand]: 78/86 looper letters, 10 selfloop transitions, 6 changer transitions 43/124 dead transitions. [2021-03-11 02:34:24,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 1160 flow [2021-03-11 02:34:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:34:24,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:34:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-03-11 02:34:24,755 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8639534883720931 [2021-03-11 02:34:24,755 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-03-11 02:34:24,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-03-11 02:34:24,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:24,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-03-11 02:34:24,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,759 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 86.0) internal successors, (946), 11 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,759 INFO L185 Difference]: Start difference. First operand has 128 places, 95 transitions, 645 flow. Second operand 10 states and 743 transitions. [2021-03-11 02:34:24,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 1160 flow [2021-03-11 02:34:24,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 124 transitions, 994 flow, removed 83 selfloop flow, removed 12 redundant places. [2021-03-11 02:34:24,771 INFO L241 Difference]: Finished difference. Result has 121 places, 79 transitions, 442 flow [2021-03-11 02:34:24,772 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=442, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2021-03-11 02:34:24,772 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 41 predicate places. [2021-03-11 02:34:24,772 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 442 flow [2021-03-11 02:34:24,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,772 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:24,773 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:24,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:34:24,773 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:24,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1062624392, now seen corresponding path program 1 times [2021-03-11 02:34:24,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:24,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995978564] [2021-03-11 02:34:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:24,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:24,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:24,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:24,840 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:34:24,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:34:24,850 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:24,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:24,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:24,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:24,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:24,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:24,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995978564] [2021-03-11 02:34:24,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:24,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:24,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357154767] [2021-03-11 02:34:24,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:24,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:24,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:24,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:24,887 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 86 [2021-03-11 02:34:24,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:24,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:24,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 86 [2021-03-11 02:34:24,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:25,010 INFO L129 PetriNetUnfolder]: 54/339 cut-off events. [2021-03-11 02:34:25,010 INFO L130 PetriNetUnfolder]: For 1611/2107 co-relation queries the response was YES. [2021-03-11 02:34:25,012 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 339 events. 54/339 cut-off events. For 1611/2107 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1844 event pairs, 16 based on Foata normal form. 14/350 useless extension candidates. Maximal degree in co-relation 1255. Up to 68 conditions per place. [2021-03-11 02:34:25,013 INFO L132 encePairwiseOnDemand]: 76/86 looper letters, 18 selfloop transitions, 10 changer transitions 24/104 dead transitions. [2021-03-11 02:34:25,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 104 transitions, 831 flow [2021-03-11 02:34:25,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:34:25,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:34:25,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 576 transitions. [2021-03-11 02:34:25,015 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8372093023255814 [2021-03-11 02:34:25,015 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 576 transitions. [2021-03-11 02:34:25,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 576 transitions. [2021-03-11 02:34:25,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:25,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 576 transitions. [2021-03-11 02:34:25,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.0) internal successors, (576), 8 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,019 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,019 INFO L185 Difference]: Start difference. First operand has 121 places, 79 transitions, 442 flow. Second operand 8 states and 576 transitions. [2021-03-11 02:34:25,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 104 transitions, 831 flow [2021-03-11 02:34:25,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 104 transitions, 719 flow, removed 23 selfloop flow, removed 13 redundant places. [2021-03-11 02:34:25,025 INFO L241 Difference]: Finished difference. Result has 113 places, 75 transitions, 364 flow [2021-03-11 02:34:25,026 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=113, PETRI_TRANSITIONS=75} [2021-03-11 02:34:25,026 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 33 predicate places. [2021-03-11 02:34:25,026 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 75 transitions, 364 flow [2021-03-11 02:34:25,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,026 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:25,026 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:25,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:34:25,027 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:25,027 INFO L82 PathProgramCache]: Analyzing trace with hash 496161224, now seen corresponding path program 2 times [2021-03-11 02:34:25,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:25,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806900980] [2021-03-11 02:34:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:25,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:25,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:25,093 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:25,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:25,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:25,117 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:25,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:25,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:25,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806900980] [2021-03-11 02:34:25,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:25,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:34:25,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756658431] [2021-03-11 02:34:25,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:34:25,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:25,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:34:25,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:34:25,128 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 86 [2021-03-11 02:34:25,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 75 transitions, 364 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:25,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 86 [2021-03-11 02:34:25,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:25,474 INFO L129 PetriNetUnfolder]: 1034/2163 cut-off events. [2021-03-11 02:34:25,474 INFO L130 PetriNetUnfolder]: For 1814/2007 co-relation queries the response was YES. [2021-03-11 02:34:25,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4654 conditions, 2163 events. 1034/2163 cut-off events. For 1814/2007 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 16357 event pairs, 83 based on Foata normal form. 55/2053 useless extension candidates. Maximal degree in co-relation 4630. Up to 815 conditions per place. [2021-03-11 02:34:25,493 INFO L132 encePairwiseOnDemand]: 76/86 looper letters, 23 selfloop transitions, 19 changer transitions 0/106 dead transitions. [2021-03-11 02:34:25,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 106 transitions, 510 flow [2021-03-11 02:34:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:34:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:34:25,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 683 transitions. [2021-03-11 02:34:25,495 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8824289405684754 [2021-03-11 02:34:25,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 683 transitions. [2021-03-11 02:34:25,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 683 transitions. [2021-03-11 02:34:25,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:25,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 683 transitions. [2021-03-11 02:34:25,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.88888888888889) internal successors, (683), 9 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,499 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,499 INFO L185 Difference]: Start difference. First operand has 113 places, 75 transitions, 364 flow. Second operand 9 states and 683 transitions. [2021-03-11 02:34:25,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 106 transitions, 510 flow [2021-03-11 02:34:25,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 464 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-03-11 02:34:25,506 INFO L241 Difference]: Finished difference. Result has 113 places, 92 transitions, 452 flow [2021-03-11 02:34:25,507 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=113, PETRI_TRANSITIONS=92} [2021-03-11 02:34:25,507 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 33 predicate places. [2021-03-11 02:34:25,507 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 92 transitions, 452 flow [2021-03-11 02:34:25,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,507 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:25,507 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:25,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:34:25,508 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:25,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:25,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1516004090, now seen corresponding path program 1 times [2021-03-11 02:34:25,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:25,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025656566] [2021-03-11 02:34:25,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:25,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:25,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:25,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:25,560 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:25,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:25,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:25,585 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:25,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:25,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:25,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:25,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025656566] [2021-03-11 02:34:25,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:25,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:25,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230943059] [2021-03-11 02:34:25,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:25,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:25,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:25,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:25,597 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 86 [2021-03-11 02:34:25,597 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 92 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:25,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:25,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 86 [2021-03-11 02:34:25,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:26,001 INFO L129 PetriNetUnfolder]: 1125/2374 cut-off events. [2021-03-11 02:34:26,001 INFO L130 PetriNetUnfolder]: For 6611/8203 co-relation queries the response was YES. [2021-03-11 02:34:26,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8888 conditions, 2374 events. 1125/2374 cut-off events. For 6611/8203 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 18723 event pairs, 30 based on Foata normal form. 234/2451 useless extension candidates. Maximal degree in co-relation 8865. Up to 1241 conditions per place. [2021-03-11 02:34:26,027 INFO L132 encePairwiseOnDemand]: 76/86 looper letters, 25 selfloop transitions, 37 changer transitions 0/126 dead transitions. [2021-03-11 02:34:26,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 126 transitions, 805 flow [2021-03-11 02:34:26,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-11 02:34:26,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-11 02:34:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 912 transitions. [2021-03-11 02:34:26,030 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8837209302325582 [2021-03-11 02:34:26,031 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 912 transitions. [2021-03-11 02:34:26,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 912 transitions. [2021-03-11 02:34:26,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:26,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 912 transitions. [2021-03-11 02:34:26,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,035 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 86.0) internal successors, (1118), 13 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,035 INFO L185 Difference]: Start difference. First operand has 113 places, 92 transitions, 452 flow. Second operand 12 states and 912 transitions. [2021-03-11 02:34:26,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 126 transitions, 805 flow [2021-03-11 02:34:26,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 02:34:26,049 INFO L241 Difference]: Finished difference. Result has 128 places, 111 transitions, 730 flow [2021-03-11 02:34:26,049 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=730, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2021-03-11 02:34:26,049 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 48 predicate places. [2021-03-11 02:34:26,049 INFO L480 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 730 flow [2021-03-11 02:34:26,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,049 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:26,050 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:26,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:34:26,050 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:26,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1243432309, now seen corresponding path program 1 times [2021-03-11 02:34:26,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:26,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751410765] [2021-03-11 02:34:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:26,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:26,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:26,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:26,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:26,102 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:26,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:26,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:26,123 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:26,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:26,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:26,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751410765] [2021-03-11 02:34:26,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:26,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:26,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011357506] [2021-03-11 02:34:26,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:26,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:26,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:26,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:26,140 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 86 [2021-03-11 02:34:26,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:26,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 86 [2021-03-11 02:34:26,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:26,635 INFO L129 PetriNetUnfolder]: 1090/2317 cut-off events. [2021-03-11 02:34:26,635 INFO L130 PetriNetUnfolder]: For 19388/24270 co-relation queries the response was YES. [2021-03-11 02:34:26,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12375 conditions, 2317 events. 1090/2317 cut-off events. For 19388/24270 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 18626 event pairs, 4 based on Foata normal form. 377/2545 useless extension candidates. Maximal degree in co-relation 12346. Up to 1210 conditions per place. [2021-03-11 02:34:26,662 INFO L132 encePairwiseOnDemand]: 76/86 looper letters, 19 selfloop transitions, 57 changer transitions 8/148 dead transitions. [2021-03-11 02:34:26,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 148 transitions, 1304 flow [2021-03-11 02:34:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 02:34:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 02:34:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1141 transitions. [2021-03-11 02:34:26,665 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8844961240310077 [2021-03-11 02:34:26,666 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1141 transitions. [2021-03-11 02:34:26,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1141 transitions. [2021-03-11 02:34:26,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:26,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1141 transitions. [2021-03-11 02:34:26,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 76.06666666666666) internal successors, (1141), 15 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 86.0) internal successors, (1376), 16 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,671 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 86.0) internal successors, (1376), 16 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,671 INFO L185 Difference]: Start difference. First operand has 128 places, 111 transitions, 730 flow. Second operand 15 states and 1141 transitions. [2021-03-11 02:34:26,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 148 transitions, 1304 flow [2021-03-11 02:34:26,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 148 transitions, 1201 flow, removed 42 selfloop flow, removed 4 redundant places. [2021-03-11 02:34:26,749 INFO L241 Difference]: Finished difference. Result has 141 places, 136 transitions, 1079 flow [2021-03-11 02:34:26,749 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1079, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2021-03-11 02:34:26,750 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 61 predicate places. [2021-03-11 02:34:26,750 INFO L480 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 1079 flow [2021-03-11 02:34:26,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,750 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:26,750 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:26,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 02:34:26,750 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:26,751 INFO L82 PathProgramCache]: Analyzing trace with hash 2024307630, now seen corresponding path program 1 times [2021-03-11 02:34:26,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:26,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132651291] [2021-03-11 02:34:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:26,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:26,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:26,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:26,784 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:34:26,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:34:26,792 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:26,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:26,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:26,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:26,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:26,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:26,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132651291] [2021-03-11 02:34:26,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:26,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:26,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150906793] [2021-03-11 02:34:26,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:26,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:26,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:26,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:26,831 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 86 [2021-03-11 02:34:26,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 1079 flow. Second operand has 8 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:26,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:26,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 86 [2021-03-11 02:34:26,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:27,191 INFO L129 PetriNetUnfolder]: 939/2418 cut-off events. [2021-03-11 02:34:27,191 INFO L130 PetriNetUnfolder]: For 18347/19241 co-relation queries the response was YES. [2021-03-11 02:34:27,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11036 conditions, 2418 events. 939/2418 cut-off events. For 18347/19241 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 22223 event pairs, 5 based on Foata normal form. 16/2281 useless extension candidates. Maximal degree in co-relation 11003. Up to 875 conditions per place. [2021-03-11 02:34:27,213 INFO L132 encePairwiseOnDemand]: 75/86 looper letters, 18 selfloop transitions, 11 changer transitions 7/149 dead transitions. [2021-03-11 02:34:27,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 149 transitions, 1259 flow [2021-03-11 02:34:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:34:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:34:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 638 transitions. [2021-03-11 02:34:27,215 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8242894056847545 [2021-03-11 02:34:27,215 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 638 transitions. [2021-03-11 02:34:27,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 638 transitions. [2021-03-11 02:34:27,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:27,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 638 transitions. [2021-03-11 02:34:27,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.88888888888889) internal successors, (638), 9 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:27,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:27,222 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:27,222 INFO L185 Difference]: Start difference. First operand has 141 places, 136 transitions, 1079 flow. Second operand 9 states and 638 transitions. [2021-03-11 02:34:27,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 149 transitions, 1259 flow [2021-03-11 02:34:27,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 149 transitions, 946 flow, removed 114 selfloop flow, removed 11 redundant places. [2021-03-11 02:34:27,382 INFO L241 Difference]: Finished difference. Result has 142 places, 136 transitions, 797 flow [2021-03-11 02:34:27,382 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=797, PETRI_PLACES=142, PETRI_TRANSITIONS=136} [2021-03-11 02:34:27,383 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 62 predicate places. [2021-03-11 02:34:27,383 INFO L480 AbstractCegarLoop]: Abstraction has has 142 places, 136 transitions, 797 flow [2021-03-11 02:34:27,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 68.75) internal successors, (550), 8 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:27,383 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:27,383 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:27,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 02:34:27,384 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:27,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:27,384 INFO L82 PathProgramCache]: Analyzing trace with hash 609086908, now seen corresponding path program 2 times [2021-03-11 02:34:27,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:27,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254210187] [2021-03-11 02:34:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:27,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:27,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:27,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:27,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:27,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:27,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:27,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:27,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:27,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:27,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:27,439 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:27,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:27,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:27,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:27,461 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:27,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:27,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:27,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:27,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254210187] [2021-03-11 02:34:27,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:27,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-11 02:34:27,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573584614] [2021-03-11 02:34:27,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 02:34:27,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:27,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 02:34:27,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-11 02:34:27,473 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 86 [2021-03-11 02:34:27,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 136 transitions, 797 flow. Second operand has 9 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:27,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:27,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 86 [2021-03-11 02:34:27,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:28,022 INFO L129 PetriNetUnfolder]: 1141/2535 cut-off events. [2021-03-11 02:34:28,022 INFO L130 PetriNetUnfolder]: For 4045/6116 co-relation queries the response was YES. [2021-03-11 02:34:28,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8465 conditions, 2535 events. 1141/2535 cut-off events. For 4045/6116 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 22253 event pairs, 0 based on Foata normal form. 395/2750 useless extension candidates. Maximal degree in co-relation 8431. Up to 442 conditions per place. [2021-03-11 02:34:28,045 INFO L132 encePairwiseOnDemand]: 76/86 looper letters, 4 selfloop transitions, 19 changer transitions 80/160 dead transitions. [2021-03-11 02:34:28,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 160 transitions, 1146 flow [2021-03-11 02:34:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-11 02:34:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-11 02:34:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1354 transitions. [2021-03-11 02:34:28,048 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8746770025839793 [2021-03-11 02:34:28,048 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1354 transitions. [2021-03-11 02:34:28,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1354 transitions. [2021-03-11 02:34:28,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:28,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1354 transitions. [2021-03-11 02:34:28,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 75.22222222222223) internal successors, (1354), 18 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,055 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 86.0) internal successors, (1634), 19 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,055 INFO L185 Difference]: Start difference. First operand has 142 places, 136 transitions, 797 flow. Second operand 18 states and 1354 transitions. [2021-03-11 02:34:28,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 160 transitions, 1146 flow [2021-03-11 02:34:28,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 160 transitions, 1093 flow, removed 14 selfloop flow, removed 11 redundant places. [2021-03-11 02:34:28,100 INFO L241 Difference]: Finished difference. Result has 151 places, 80 transitions, 405 flow [2021-03-11 02:34:28,100 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=405, PETRI_PLACES=151, PETRI_TRANSITIONS=80} [2021-03-11 02:34:28,101 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 71 predicate places. [2021-03-11 02:34:28,101 INFO L480 AbstractCegarLoop]: Abstraction has has 151 places, 80 transitions, 405 flow [2021-03-11 02:34:28,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,101 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:28,101 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:28,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 02:34:28,101 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:28,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1399614661, now seen corresponding path program 1 times [2021-03-11 02:34:28,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:28,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931475583] [2021-03-11 02:34:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:28,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:28,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:28,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:28,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:28,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:28,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:28,160 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:28,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:28,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:28,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:28,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:28,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:28,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:28,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:28,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931475583] [2021-03-11 02:34:28,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:28,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:28,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775009058] [2021-03-11 02:34:28,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:28,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:28,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:28,196 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 86 [2021-03-11 02:34:28,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 80 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:28,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 86 [2021-03-11 02:34:28,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:28,266 INFO L129 PetriNetUnfolder]: 33/174 cut-off events. [2021-03-11 02:34:28,267 INFO L130 PetriNetUnfolder]: For 289/319 co-relation queries the response was YES. [2021-03-11 02:34:28,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 174 events. 33/174 cut-off events. For 289/319 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 589 event pairs, 0 based on Foata normal form. 2/166 useless extension candidates. Maximal degree in co-relation 445. Up to 32 conditions per place. [2021-03-11 02:34:28,268 INFO L132 encePairwiseOnDemand]: 80/86 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2021-03-11 02:34:28,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 78 transitions, 421 flow [2021-03-11 02:34:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:34:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:34:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 508 transitions. [2021-03-11 02:34:28,269 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8438538205980066 [2021-03-11 02:34:28,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 508 transitions. [2021-03-11 02:34:28,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 508 transitions. [2021-03-11 02:34:28,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:28,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 508 transitions. [2021-03-11 02:34:28,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,272 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,273 INFO L185 Difference]: Start difference. First operand has 151 places, 80 transitions, 405 flow. Second operand 7 states and 508 transitions. [2021-03-11 02:34:28,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 78 transitions, 421 flow [2021-03-11 02:34:28,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 78 transitions, 262 flow, removed 24 selfloop flow, removed 35 redundant places. [2021-03-11 02:34:28,276 INFO L241 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2021-03-11 02:34:28,276 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2021-03-11 02:34:28,276 INFO L335 CegarLoopForPetriNet]: 80 programPoint places, 16 predicate places. [2021-03-11 02:34:28,276 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2021-03-11 02:34:28,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:28,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 02:34:28,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:34:28 BasicIcfg [2021-03-11 02:34:28,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:34:28,282 INFO L168 Benchmark]: Toolchain (without parser) took 7422.13 ms. Allocated memory was 367.0 MB in the beginning and 557.8 MB in the end (delta: 190.8 MB). Free memory was 330.7 MB in the beginning and 426.8 MB in the end (delta: -96.1 MB). Peak memory consumption was 96.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:28,283 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 367.0 MB. Free memory was 348.7 MB in the beginning and 348.6 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:34:28,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.71 ms. Allocated memory is still 367.0 MB. Free memory was 330.0 MB in the beginning and 329.9 MB in the end (delta: 136.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:28,284 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.89 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 327.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:28,284 INFO L168 Benchmark]: Boogie Preprocessor took 37.38 ms. Allocated memory is still 367.0 MB. Free memory was 327.8 MB in the beginning and 325.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:28,285 INFO L168 Benchmark]: RCFGBuilder took 325.23 ms. Allocated memory is still 367.0 MB. Free memory was 325.2 MB in the beginning and 299.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:28,285 INFO L168 Benchmark]: TraceAbstraction took 6508.52 ms. Allocated memory was 367.0 MB in the beginning and 557.8 MB in the end (delta: 190.8 MB). Free memory was 299.5 MB in the beginning and 426.8 MB in the end (delta: -127.3 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:28,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 367.0 MB. Free memory was 348.7 MB in the beginning and 348.6 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 502.71 ms. Allocated memory is still 367.0 MB. Free memory was 330.0 MB in the beginning and 329.9 MB in the end (delta: 136.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.89 ms. Allocated memory is still 367.0 MB. Free memory was 328.9 MB in the beginning and 327.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 37.38 ms. Allocated memory is still 367.0 MB. Free memory was 327.8 MB in the beginning and 325.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 325.23 ms. Allocated memory is still 367.0 MB. Free memory was 325.2 MB in the beginning and 299.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 6508.52 ms. Allocated memory was 367.0 MB in the beginning and 557.8 MB in the end (delta: 190.8 MB). Free memory was 299.5 MB in the beginning and 426.8 MB in the end (delta: -127.3 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 6390.1ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4504.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 55.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 178 SDtfs, 456 SDslu, 601 SDs, 0 SdLazy, 716 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 490.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1617.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1079occurred in iteration=10, InterpolantAutomatonStates: 150, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 40.2ms SsaConstructionTime, 293.3ms SatisfiabilityAnalysisTime, 1266.1ms InterpolantComputationTime, 668 NumberOfCodeBlocks, 668 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 655 ConstructedInterpolants, 0 QuantifiedInterpolants, 2273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...