/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:30:52,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:30:52,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:30:52,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:30:52,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:30:52,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:30:52,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:30:52,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:30:52,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:30:52,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:30:52,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:30:52,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:30:52,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:30:52,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:30:52,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:30:52,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:30:52,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:30:52,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:30:52,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:30:52,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:30:52,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:30:52,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:30:52,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:30:52,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:30:52,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 21:30:52,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:30:52,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:30:52,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:30:52,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:30:52,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:30:52,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:30:52,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:30:52,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:30:52,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:30:52,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:30:52,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:30:52,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:30:52,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:30:52,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:30:52,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:30:52,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:30:52,687 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:30:52,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:30:52,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:30:52,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:30:52,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:30:52,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:30:52,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:30:52,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:30:52,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:30:52,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:30:52,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:30:52,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:30:52,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:30:52,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:30:52,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:30:53,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:30:53,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:30:53,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:30:53,033 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:30:53,034 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:30:53,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-06-10 21:30:53,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef73536c/607d9fc30e7840edaec2306201ef68aa/FLAG5a1eaeee6 [2021-06-10 21:30:53,567 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:30:53,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-06-10 21:30:53,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef73536c/607d9fc30e7840edaec2306201ef68aa/FLAG5a1eaeee6 [2021-06-10 21:30:53,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eef73536c/607d9fc30e7840edaec2306201ef68aa [2021-06-10 21:30:53,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:30:53,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:30:53,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:30:53,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:30:53,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:30:53,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:30:53" (1/1) ... [2021-06-10 21:30:53,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca0466d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:53, skipping insertion in model container [2021-06-10 21:30:53,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:30:53" (1/1) ... [2021-06-10 21:30:53,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:30:53,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:30:54,108 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/safe029_tso.opt.i[949,962] [2021-06-10 21:30:54,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:30:54,204 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:30:54,212 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/safe029_tso.opt.i[949,962] [2021-06-10 21:30:54,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:30:54,292 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:30:54,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54 WrapperNode [2021-06-10 21:30:54,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:30:54,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:30:54,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:30:54,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:30:54,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:30:54,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:30:54,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:30:54,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:30:54,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (1/1) ... [2021-06-10 21:30:54,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:30:54,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:30:54,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:30:54,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:30:54,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (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 [2021-06-10 21:30:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:30:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:30:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:30:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:30:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:30:54,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:30:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:30:54,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:30:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:30:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:30:54,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:30:54,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:30:54,446 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:30:54,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:30:54,734 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:30:54,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:30:54 BoogieIcfgContainer [2021-06-10 21:30:54,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:30:54,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:30:54,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:30:54,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:30:54,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:30:53" (1/3) ... [2021-06-10 21:30:54,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f42836b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:30:54, skipping insertion in model container [2021-06-10 21:30:54,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:30:54" (2/3) ... [2021-06-10 21:30:54,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f42836b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:30:54, skipping insertion in model container [2021-06-10 21:30:54,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:30:54" (3/3) ... [2021-06-10 21:30:54,742 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2021-06-10 21:30:54,746 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:30:54,750 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:30:54,750 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:30:54,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,773 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,774 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,775 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,775 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,775 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,776 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,776 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,779 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,779 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,779 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,780 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,783 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,784 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,784 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,784 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:30:54,785 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:30:54,798 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-10 21:30:54,822 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:30:54,822 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:30:54,822 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:30:54,823 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:30:54,823 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:30:54,823 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:30:54,823 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:30:54,823 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:30:54,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 59 transitions, 128 flow [2021-06-10 21:30:54,865 INFO L129 PetriNetUnfolder]: 2/57 cut-off events. [2021-06-10 21:30:54,866 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:54,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 57 events. 2/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-10 21:30:54,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 59 transitions, 128 flow [2021-06-10 21:30:54,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 47 transitions, 100 flow [2021-06-10 21:30:54,881 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:30:54,892 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 47 transitions, 100 flow [2021-06-10 21:30:54,895 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 47 transitions, 100 flow [2021-06-10 21:30:54,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 100 flow [2021-06-10 21:30:54,910 INFO L129 PetriNetUnfolder]: 1/47 cut-off events. [2021-06-10 21:30:54,910 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:54,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2021-06-10 21:30:54,912 INFO L151 LiptonReduction]: Number of co-enabled transitions 456 [2021-06-10 21:30:54,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:54,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:54,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:54,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:55,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:55,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:55,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:55,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:55,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:55,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,587 INFO L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-06-10 21:30:55,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:55,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:55,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:55,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:30:55,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:30:55,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:55,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:55,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:55,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,885 INFO L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-06-10 21:30:55,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:55,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:56,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:56,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:30:56,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:30:56,202 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-10 21:30:56,365 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-10 21:30:56,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:56,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:56,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 21:30:56,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:30:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:56,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:56,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 21:30:56,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-10 21:30:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:30:56,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:30:56,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 21:30:56,455 INFO L163 LiptonReduction]: Checked pairs total: 898 [2021-06-10 21:30:56,455 INFO L165 LiptonReduction]: Total number of compositions: 38 [2021-06-10 21:30:56,457 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1577 [2021-06-10 21:30:56,465 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-10 21:30:56,466 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:56,466 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:56,466 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-10 21:30:56,467 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:56,473 INFO L82 PathProgramCache]: Analyzing trace with hash 198302032, now seen corresponding path program 1 times [2021-06-10 21:30:56,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:56,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687156606] [2021-06-10 21:30:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:56,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:30:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:56,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687156606] [2021-06-10 21:30:56,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:56,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:30:56,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505702167] [2021-06-10 21:30:56,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:30:56,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:30:56,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:30:56,627 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 97 [2021-06-10 21:30:56,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2021-06-10 21:30:56,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:56,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 97 [2021-06-10 21:30:56,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:56,632 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-06-10 21:30:56,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:56,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 12 events. 0/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 0 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:30:56,633 INFO L132 encePairwiseOnDemand]: 96/97 looper letters, 0 selfloop transitions, 0 changer transitions 0/12 dead transitions. [2021-06-10 21:30:56,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 30 flow [2021-06-10 21:30:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:30:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:30:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 181 transitions. [2021-06-10 21:30:56,640 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9329896907216495 [2021-06-10 21:30:56,641 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 181 transitions. [2021-06-10 21:30:56,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 181 transitions. [2021-06-10 21:30:56,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:56,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 181 transitions. [2021-06-10 21:30:56,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2021-06-10 21:30:56,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2021-06-10 21:30:56,648 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2021-06-10 21:30:56,649 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 2 states and 181 transitions. [2021-06-10 21:30:56,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 30 flow [2021-06-10 21:30:56,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 12 transitions, 28 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:30:56,651 INFO L241 Difference]: Finished difference. Result has 18 places, 12 transitions, 28 flow [2021-06-10 21:30:56,652 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2021-06-10 21:30:56,653 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-10 21:30:56,653 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 28 flow [2021-06-10 21:30:56,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2021-06-10 21:30:56,653 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:56,653 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-10 21:30:56,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:30:56,654 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:56,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1852395464, now seen corresponding path program 1 times [2021-06-10 21:30:56,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:56,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793609251] [2021-06-10 21:30:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:56,705 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 21:30:56,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:30:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:56,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793609251] [2021-06-10 21:30:56,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:56,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:30:56,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905540345] [2021-06-10 21:30:56,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:30:56,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:30:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:30:56,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-06-10 21:30:56,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 28 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-06-10 21:30:56,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:56,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-06-10 21:30:56,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:56,726 INFO L129 PetriNetUnfolder]: 11/46 cut-off events. [2021-06-10 21:30:56,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:30:56,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 46 events. 11/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 140 event pairs, 3 based on Foata normal form. 5/50 useless extension candidates. Maximal degree in co-relation 82. Up to 17 conditions per place. [2021-06-10 21:30:56,727 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 5 selfloop transitions, 5 changer transitions 0/16 dead transitions. [2021-06-10 21:30:56,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 56 flow [2021-06-10 21:30:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:30:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:30:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2021-06-10 21:30:56,728 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7800687285223368 [2021-06-10 21:30:56,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2021-06-10 21:30:56,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2021-06-10 21:30:56,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:56,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2021-06-10 21:30:56,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2021-06-10 21:30:56,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-06-10 21:30:56,735 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 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) [2021-06-10 21:30:56,735 INFO L185 Difference]: Start difference. First operand has 18 places, 12 transitions, 28 flow. Second operand 3 states and 227 transitions. [2021-06-10 21:30:56,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 56 flow [2021-06-10 21:30:56,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:30:56,736 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 66 flow [2021-06-10 21:30:56,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2021-06-10 21:30:56,736 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2021-06-10 21:30:56,736 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 66 flow [2021-06-10 21:30:56,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-06-10 21:30:56,737 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:56,737 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:56,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:30:56,737 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:56,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1589684180, now seen corresponding path program 1 times [2021-06-10 21:30:56,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:56,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325907241] [2021-06-10 21:30:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:56,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:56,808 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 21:30:56,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:30:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:56,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325907241] [2021-06-10 21:30:56,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:56,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:30:56,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382815072] [2021-06-10 21:30:56,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:30:56,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:56,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:30:56,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:30:56,814 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-06-10 21:30:56,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2021-06-10 21:30:56,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:56,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-06-10 21:30:56,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:56,841 INFO L129 PetriNetUnfolder]: 9/41 cut-off events. [2021-06-10 21:30:56,841 INFO L130 PetriNetUnfolder]: For 18/32 co-relation queries the response was YES. [2021-06-10 21:30:56,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 41 events. 9/41 cut-off events. For 18/32 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 117 event pairs, 1 based on Foata normal form. 3/44 useless extension candidates. Maximal degree in co-relation 118. Up to 16 conditions per place. [2021-06-10 21:30:56,842 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 5 selfloop transitions, 8 changer transitions 0/19 dead transitions. [2021-06-10 21:30:56,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 110 flow [2021-06-10 21:30:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:30:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:30:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2021-06-10 21:30:56,848 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7757731958762887 [2021-06-10 21:30:56,848 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2021-06-10 21:30:56,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2021-06-10 21:30:56,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:56,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2021-06-10 21:30:56,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2021-06-10 21:30:56,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2021-06-10 21:30:56,850 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2021-06-10 21:30:56,850 INFO L185 Difference]: Start difference. First operand has 22 places, 16 transitions, 66 flow. Second operand 4 states and 301 transitions. [2021-06-10 21:30:56,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 110 flow [2021-06-10 21:30:56,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:30:56,852 INFO L241 Difference]: Finished difference. Result has 25 places, 19 transitions, 97 flow [2021-06-10 21:30:56,852 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2021-06-10 21:30:56,852 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2021-06-10 21:30:56,852 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 97 flow [2021-06-10 21:30:56,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2021-06-10 21:30:56,852 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:56,852 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:56,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:30:56,853 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:56,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1589684211, now seen corresponding path program 1 times [2021-06-10 21:30:56,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:56,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408860265] [2021-06-10 21:30:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:56,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:56,878 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-10 21:30:56,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 21:30:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:56,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408860265] [2021-06-10 21:30:56,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:56,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:30:56,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82312355] [2021-06-10 21:30:56,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:30:56,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:56,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:30:56,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:30:56,884 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2021-06-10 21:30:56,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2021-06-10 21:30:56,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:56,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2021-06-10 21:30:56,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:56,897 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2021-06-10 21:30:56,897 INFO L130 PetriNetUnfolder]: For 30/41 co-relation queries the response was YES. [2021-06-10 21:30:56,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 36 events. 7/36 cut-off events. For 30/41 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 0 based on Foata normal form. 5/41 useless extension candidates. Maximal degree in co-relation 112. Up to 15 conditions per place. [2021-06-10 21:30:56,898 INFO L132 encePairwiseOnDemand]: 91/97 looper letters, 5 selfloop transitions, 9 changer transitions 0/20 dead transitions. [2021-06-10 21:30:56,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 132 flow [2021-06-10 21:30:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:30:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:30:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2021-06-10 21:30:56,908 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7757731958762887 [2021-06-10 21:30:56,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2021-06-10 21:30:56,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2021-06-10 21:30:56,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:56,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2021-06-10 21:30:56,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2021-06-10 21:30:56,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2021-06-10 21:30:56,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 97.0) internal successors, (485), 5 states have internal predecessors, (485), 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) [2021-06-10 21:30:56,911 INFO L185 Difference]: Start difference. First operand has 25 places, 19 transitions, 97 flow. Second operand 4 states and 301 transitions. [2021-06-10 21:30:56,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 132 flow [2021-06-10 21:30:56,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:30:56,912 INFO L241 Difference]: Finished difference. Result has 29 places, 20 transitions, 128 flow [2021-06-10 21:30:56,912 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2021-06-10 21:30:56,913 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2021-06-10 21:30:56,913 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 128 flow [2021-06-10 21:30:56,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2021-06-10 21:30:56,913 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:56,913 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:56,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:30:56,913 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1771592219, now seen corresponding path program 1 times [2021-06-10 21:30:56,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:56,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440054157] [2021-06-10 21:30:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:56,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:56,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:56,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:56,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440054157] [2021-06-10 21:30:56,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:56,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:30:56,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279669925] [2021-06-10 21:30:56,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:30:56,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:56,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:30:56,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:30:56,955 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 97 [2021-06-10 21:30:56,956 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2021-06-10 21:30:56,956 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:56,956 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 97 [2021-06-10 21:30:56,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:56,975 INFO L129 PetriNetUnfolder]: 9/47 cut-off events. [2021-06-10 21:30:56,976 INFO L130 PetriNetUnfolder]: For 64/73 co-relation queries the response was YES. [2021-06-10 21:30:56,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 47 events. 9/47 cut-off events. For 64/73 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 166 event pairs, 1 based on Foata normal form. 10/56 useless extension candidates. Maximal degree in co-relation 137. Up to 20 conditions per place. [2021-06-10 21:30:56,976 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 4 selfloop transitions, 3 changer transitions 9/27 dead transitions. [2021-06-10 21:30:56,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 166 flow [2021-06-10 21:30:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:30:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:30:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2021-06-10 21:30:56,978 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7608247422680412 [2021-06-10 21:30:56,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 369 transitions. [2021-06-10 21:30:56,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 369 transitions. [2021-06-10 21:30:56,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:56,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 369 transitions. [2021-06-10 21:30:56,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 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) [2021-06-10 21:30:56,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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) [2021-06-10 21:30:56,980 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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) [2021-06-10 21:30:56,980 INFO L185 Difference]: Start difference. First operand has 29 places, 20 transitions, 128 flow. Second operand 5 states and 369 transitions. [2021-06-10 21:30:56,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 166 flow [2021-06-10 21:30:56,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 152 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-10 21:30:56,982 INFO L241 Difference]: Finished difference. Result has 34 places, 18 transitions, 119 flow [2021-06-10 21:30:56,982 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2021-06-10 21:30:56,982 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 15 predicate places. [2021-06-10 21:30:56,982 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 119 flow [2021-06-10 21:30:56,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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) [2021-06-10 21:30:56,982 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:30:56,982 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:30:56,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:30:56,983 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:30:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:30:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1633172436, now seen corresponding path program 1 times [2021-06-10 21:30:56,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:30:56,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436102555] [2021-06-10 21:30:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:30:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:30:57,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:57,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:57,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:57,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:30:57,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:30:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:30:57,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436102555] [2021-06-10 21:30:57,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:30:57,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:30:57,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766503510] [2021-06-10 21:30:57,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:30:57,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:30:57,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:30:57,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:30:57,017 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 97 [2021-06-10 21:30:57,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2021-06-10 21:30:57,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:30:57,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 97 [2021-06-10 21:30:57,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:30:57,044 INFO L129 PetriNetUnfolder]: 3/23 cut-off events. [2021-06-10 21:30:57,044 INFO L130 PetriNetUnfolder]: For 35/43 co-relation queries the response was YES. [2021-06-10 21:30:57,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 23 events. 3/23 cut-off events. For 35/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 5/28 useless extension candidates. Maximal degree in co-relation 83. Up to 12 conditions per place. [2021-06-10 21:30:57,045 INFO L132 encePairwiseOnDemand]: 92/97 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-06-10 21:30:57,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 20 transitions, 141 flow [2021-06-10 21:30:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-10 21:30:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-10 21:30:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 436 transitions. [2021-06-10 21:30:57,046 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7491408934707904 [2021-06-10 21:30:57,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 436 transitions. [2021-06-10 21:30:57,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 436 transitions. [2021-06-10 21:30:57,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:30:57,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 436 transitions. [2021-06-10 21:30:57,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.66666666666667) internal successors, (436), 6 states have internal predecessors, (436), 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) [2021-06-10 21:30:57,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2021-06-10 21:30:57,049 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 97.0) internal successors, (679), 7 states have internal predecessors, (679), 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) [2021-06-10 21:30:57,049 INFO L185 Difference]: Start difference. First operand has 34 places, 18 transitions, 119 flow. Second operand 6 states and 436 transitions. [2021-06-10 21:30:57,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 20 transitions, 141 flow [2021-06-10 21:30:57,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 115 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-06-10 21:30:57,051 INFO L241 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2021-06-10 21:30:57,051 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2021-06-10 21:30:57,051 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2021-06-10 21:30:57,051 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2021-06-10 21:30:57,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 71.8) internal successors, (359), 5 states have internal predecessors, (359), 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) [2021-06-10 21:30:57,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:30:57,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:30:57 BasicIcfg [2021-06-10 21:30:57,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:30:57,057 INFO L168 Benchmark]: Toolchain (without parser) took 3099.82 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 326.7 MB in the beginning and 384.7 MB in the end (delta: -58.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:57,058 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 364.9 MB. Free memory was 345.2 MB in the beginning and 345.1 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:30:57,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.21 ms. Allocated memory is still 364.9 MB. Free memory was 326.6 MB in the beginning and 326.4 MB in the end (delta: 183.2 kB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:57,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.81 ms. Allocated memory is still 364.9 MB. Free memory was 326.4 MB in the beginning and 324.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:57,060 INFO L168 Benchmark]: Boogie Preprocessor took 29.70 ms. Allocated memory is still 364.9 MB. Free memory was 324.3 MB in the beginning and 323.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:57,062 INFO L168 Benchmark]: RCFGBuilder took 363.90 ms. Allocated memory is still 364.9 MB. Free memory was 323.3 MB in the beginning and 301.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-06-10 21:30:57,062 INFO L168 Benchmark]: TraceAbstraction took 2316.72 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 301.2 MB in the beginning and 384.7 MB in the end (delta: -83.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:30:57,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 364.9 MB. Free memory was 345.2 MB in the beginning and 345.1 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 340.21 ms. Allocated memory is still 364.9 MB. Free memory was 326.6 MB in the beginning and 326.4 MB in the end (delta: 183.2 kB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.81 ms. Allocated memory is still 364.9 MB. Free memory was 326.4 MB in the beginning and 324.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.70 ms. Allocated memory is still 364.9 MB. Free memory was 324.3 MB in the beginning and 323.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 363.90 ms. Allocated memory is still 364.9 MB. Free memory was 323.3 MB in the beginning and 301.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2316.72 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 301.2 MB in the beginning and 384.7 MB in the end (delta: -83.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1560.5ms, 53 PlacesBefore, 19 PlacesAfterwards, 47 TransitionsBefore, 13 TransitionsAfterwards, 456 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 38 TotalNumberOfCompositions, 898 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 555, positive: 494, positive conditional: 0, positive unconditional: 494, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 359, positive: 332, positive conditional: 0, positive unconditional: 332, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 359, positive: 332, positive conditional: 0, positive unconditional: 332, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 359, positive: 328, positive conditional: 0, positive unconditional: 328, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 81, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 555, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 359, unknown conditional: 0, unknown unconditional: 359] , Statistics on independence cache: Total cache size (in pairs): 617, Positive cache size: 590, Positive conditional cache size: 0, Positive unconditional cache size: 590, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2233.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 184.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1638.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 6 SDslu, 9 SDs, 0 SdLazy, 49 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 34.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=4, InterpolantAutomatonStates: 24, 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: 14.4ms SsaConstructionTime, 86.8ms SatisfiabilityAnalysisTime, 201.5ms InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 145 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...