/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:34:01,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:34:01,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:34:01,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:34:01,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:34:01,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:34:01,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:34:01,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:34:01,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:34:01,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:34:01,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:34:01,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:34:01,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:34:01,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:34:01,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:34:01,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:34:01,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:34:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:34:01,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:34:01,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:34:01,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:34:01,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:34:01,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:34:01,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:34:01,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:34:01,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:34:01,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:34:01,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:34:01,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:34:01,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:34:01,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:34:01,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:34:01,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:34:01,602 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:34:01,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:34:01,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:34:01,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:34:01,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:34:01,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:34:01,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:34:01,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:34:01,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:34:01,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:34:01,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:34:01,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:34:01,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:34:01,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:34:01,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:34:01,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:34:01,605 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:34:01,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:34:01,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:34:01,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:34:01,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:34:01,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:34:01,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:34:01,888 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:34:01,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-03-11 02:34:01,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8573caa/75260ca2ed1a41819d461d1a9da971f4/FLAGe97009b2b [2021-03-11 02:34:02,356 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:34:02,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc.i [2021-03-11 02:34:02,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8573caa/75260ca2ed1a41819d461d1a9da971f4/FLAGe97009b2b [2021-03-11 02:34:02,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8573caa/75260ca2ed1a41819d461d1a9da971f4 [2021-03-11 02:34:02,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:34:02,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:34:02,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:34:02,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:34:02,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:34:02,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:34:02" (1/1) ... [2021-03-11 02:34:02,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352c31e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:02, skipping insertion in model container [2021-03-11 02:34:02,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:34:02" (1/1) ... [2021-03-11 02:34:02,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:34:02,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:34:02,881 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/safe018_pso.oepc.i[950,963] [2021-03-11 02:34:03,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:34:03,009 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:34:03,016 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/safe018_pso.oepc.i[950,963] [2021-03-11 02:34:03,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:34:03,094 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:34:03,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03 WrapperNode [2021-03-11 02:34:03,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:34:03,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:34:03,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:34:03,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:34:03,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:34:03,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:34:03,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:34:03,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:34:03,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... [2021-03-11 02:34:03,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:34:03,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:34:03,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:34:03,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:34:03,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:34:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:34:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:34:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:34:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:34:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:34:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:34:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:34:03,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:34:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:34:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:34:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:34:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:34:03,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:34:03,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:34:03,192 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:34:03,492 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:34:03,492 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:34:03,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:03 BoogieIcfgContainer [2021-03-11 02:34:03,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:34:03,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:34:03,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:34:03,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:34:03,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:34:02" (1/3) ... [2021-03-11 02:34:03,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a97db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:34:03, skipping insertion in model container [2021-03-11 02:34:03,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:34:03" (2/3) ... [2021-03-11 02:34:03,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a97db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:34:03, skipping insertion in model container [2021-03-11 02:34:03,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:34:03" (3/3) ... [2021-03-11 02:34:03,498 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc.i [2021-03-11 02:34:03,501 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:34:03,504 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:34:03,505 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:34:03,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,526 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,526 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,527 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,528 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,529 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,530 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,532 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,532 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,536 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,536 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,536 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,538 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,538 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,538 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:34:03,539 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:34:03,551 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:34:03,563 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:34:03,564 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:34:03,564 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:34:03,564 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:34:03,564 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:34:03,564 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:34:03,564 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:34:03,564 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:34:03,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:34:03,593 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 02:34:03,594 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:03,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 02:34:03,596 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 02:34:03,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-03-11 02:34:03,630 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 02:34:03,630 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:03,631 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:03,631 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:03,631 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1063022328, now seen corresponding path program 1 times [2021-03-11 02:34:03,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:03,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777012369] [2021-03-11 02:34:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:03,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:03,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:03,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:03,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:03,837 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:03,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:03,851 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:03,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:03,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:03,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:03,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:03,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:03,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:03,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:03,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777012369] [2021-03-11 02:34:03,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:03,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:03,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413632031] [2021-03-11 02:34:03,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:03,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:03,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:03,933 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 74 [2021-03-11 02:34:03,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:03,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:03,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 74 [2021-03-11 02:34:03,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:04,163 INFO L129 PetriNetUnfolder]: 46/172 cut-off events. [2021-03-11 02:34:04,164 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:34:04,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 172 events. 46/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 621 event pairs, 21 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 251. Up to 47 conditions per place. [2021-03-11 02:34:04,166 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 11 selfloop transitions, 2 changer transitions 19/78 dead transitions. [2021-03-11 02:34:04,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 229 flow [2021-03-11 02:34:04,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:34:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:34:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2021-03-11 02:34:04,183 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2021-03-11 02:34:04,184 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2021-03-11 02:34:04,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2021-03-11 02:34:04,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:04,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2021-03-11 02:34:04,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,203 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,204 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 9 states and 558 transitions. [2021-03-11 02:34:04,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 229 flow [2021-03-11 02:34:04,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:34:04,212 INFO L241 Difference]: Finished difference. Result has 80 places, 58 transitions, 142 flow [2021-03-11 02:34:04,213 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2021-03-11 02:34:04,213 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2021-03-11 02:34:04,214 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 142 flow [2021-03-11 02:34:04,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,214 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:04,214 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:04,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:34:04,214 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:04,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1010419335, now seen corresponding path program 1 times [2021-03-11 02:34:04,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:04,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798532059] [2021-03-11 02:34:04,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:04,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:04,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:04,270 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:04,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:04,282 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:04,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:04,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:04,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:04,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:04,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798532059] [2021-03-11 02:34:04,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:04,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:04,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279551599] [2021-03-11 02:34:04,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:04,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:04,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:04,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:04,335 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:34:04,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:04,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:34:04,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:04,707 INFO L129 PetriNetUnfolder]: 65/243 cut-off events. [2021-03-11 02:34:04,708 INFO L130 PetriNetUnfolder]: For 83/97 co-relation queries the response was YES. [2021-03-11 02:34:04,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 243 events. 65/243 cut-off events. For 83/97 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1020 event pairs, 5 based on Foata normal form. 8/245 useless extension candidates. Maximal degree in co-relation 435. Up to 35 conditions per place. [2021-03-11 02:34:04,712 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 16 selfloop transitions, 10 changer transitions 38/108 dead transitions. [2021-03-11 02:34:04,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 108 transitions, 426 flow [2021-03-11 02:34:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-11 02:34:04,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-11 02:34:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1020 transitions. [2021-03-11 02:34:04,715 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2021-03-11 02:34:04,715 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1020 transitions. [2021-03-11 02:34:04,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1020 transitions. [2021-03-11 02:34:04,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:04,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1020 transitions. [2021-03-11 02:34:04,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 60.0) internal successors, (1020), 17 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,719 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,719 INFO L185 Difference]: Start difference. First operand has 80 places, 58 transitions, 142 flow. Second operand 17 states and 1020 transitions. [2021-03-11 02:34:04,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 108 transitions, 426 flow [2021-03-11 02:34:04,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 362 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-03-11 02:34:04,726 INFO L241 Difference]: Finished difference. Result has 97 places, 63 transitions, 226 flow [2021-03-11 02:34:04,726 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=63} [2021-03-11 02:34:04,727 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2021-03-11 02:34:04,727 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 63 transitions, 226 flow [2021-03-11 02:34:04,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,728 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:04,728 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:04,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:34:04,728 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:04,730 INFO L82 PathProgramCache]: Analyzing trace with hash 326282953, now seen corresponding path program 1 times [2021-03-11 02:34:04,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:04,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505712644] [2021-03-11 02:34:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:04,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:04,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:04,800 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:04,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:04,807 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:04,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:04,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:04,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:04,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:04,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:04,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505712644] [2021-03-11 02:34:04,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:04,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:04,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23620861] [2021-03-11 02:34:04,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:04,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:04,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:04,840 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 74 [2021-03-11 02:34:04,840 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 63 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,840 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:04,840 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 74 [2021-03-11 02:34:04,841 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:04,943 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2021-03-11 02:34:04,944 INFO L130 PetriNetUnfolder]: For 305/341 co-relation queries the response was YES. [2021-03-11 02:34:04,944 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 103 events. 12/103 cut-off events. For 305/341 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 233 event pairs, 0 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 275. Up to 25 conditions per place. [2021-03-11 02:34:04,944 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 13 selfloop transitions, 5 changer transitions 10/75 dead transitions. [2021-03-11 02:34:04,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 375 flow [2021-03-11 02:34:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:34:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:34:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 606 transitions. [2021-03-11 02:34:04,952 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8189189189189189 [2021-03-11 02:34:04,952 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 606 transitions. [2021-03-11 02:34:04,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 606 transitions. [2021-03-11 02:34:04,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:04,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 606 transitions. [2021-03-11 02:34:04,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 60.6) internal successors, (606), 10 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,955 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,955 INFO L185 Difference]: Start difference. First operand has 97 places, 63 transitions, 226 flow. Second operand 10 states and 606 transitions. [2021-03-11 02:34:04,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 375 flow [2021-03-11 02:34:04,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 314 flow, removed 28 selfloop flow, removed 10 redundant places. [2021-03-11 02:34:04,960 INFO L241 Difference]: Finished difference. Result has 91 places, 63 transitions, 222 flow [2021-03-11 02:34:04,960 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=63} [2021-03-11 02:34:04,961 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2021-03-11 02:34:04,961 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 63 transitions, 222 flow [2021-03-11 02:34:04,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:04,961 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:04,961 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:04,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:34:04,961 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:04,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1242017434, now seen corresponding path program 1 times [2021-03-11 02:34:04,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:04,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594683419] [2021-03-11 02:34:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:05,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,063 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:05,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:05,078 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:05,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:05,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:05,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:05,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:05,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594683419] [2021-03-11 02:34:05,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:05,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:05,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301768547] [2021-03-11 02:34:05,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:05,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:05,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:05,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:05,111 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:34:05,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 63 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:05,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:34:05,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:05,213 INFO L129 PetriNetUnfolder]: 25/128 cut-off events. [2021-03-11 02:34:05,213 INFO L130 PetriNetUnfolder]: For 340/450 co-relation queries the response was YES. [2021-03-11 02:34:05,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 128 events. 25/128 cut-off events. For 340/450 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 323 event pairs, 5 based on Foata normal form. 4/127 useless extension candidates. Maximal degree in co-relation 375. Up to 29 conditions per place. [2021-03-11 02:34:05,214 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 10 selfloop transitions, 4 changer transitions 26/83 dead transitions. [2021-03-11 02:34:05,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 83 transitions, 469 flow [2021-03-11 02:34:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:34:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:34:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 596 transitions. [2021-03-11 02:34:05,216 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8054054054054054 [2021-03-11 02:34:05,216 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 596 transitions. [2021-03-11 02:34:05,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 596 transitions. [2021-03-11 02:34:05,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:05,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 596 transitions. [2021-03-11 02:34:05,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.6) internal successors, (596), 10 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,218 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,218 INFO L185 Difference]: Start difference. First operand has 91 places, 63 transitions, 222 flow. Second operand 10 states and 596 transitions. [2021-03-11 02:34:05,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 83 transitions, 469 flow [2021-03-11 02:34:05,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 427 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-03-11 02:34:05,221 INFO L241 Difference]: Finished difference. Result has 93 places, 57 transitions, 196 flow [2021-03-11 02:34:05,221 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=93, PETRI_TRANSITIONS=57} [2021-03-11 02:34:05,221 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 25 predicate places. [2021-03-11 02:34:05,221 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 57 transitions, 196 flow [2021-03-11 02:34:05,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,222 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:05,222 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:05,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:34:05,222 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2142793635, now seen corresponding path program 1 times [2021-03-11 02:34:05,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:05,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831483845] [2021-03-11 02:34:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:05,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,254 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:05,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:05,261 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:05,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:05,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:05,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:05,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:05,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831483845] [2021-03-11 02:34:05,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:05,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:05,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935126086] [2021-03-11 02:34:05,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:05,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:05,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:05,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:05,291 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:34:05,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 57 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:05,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:34:05,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:05,399 INFO L129 PetriNetUnfolder]: 23/127 cut-off events. [2021-03-11 02:34:05,400 INFO L130 PetriNetUnfolder]: For 358/380 co-relation queries the response was YES. [2021-03-11 02:34:05,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 127 events. 23/127 cut-off events. For 358/380 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 367 event pairs, 5 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 368. Up to 25 conditions per place. [2021-03-11 02:34:05,400 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 8 selfloop transitions, 6 changer transitions 22/79 dead transitions. [2021-03-11 02:34:05,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 457 flow [2021-03-11 02:34:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:34:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:34:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 654 transitions. [2021-03-11 02:34:05,402 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8034398034398035 [2021-03-11 02:34:05,402 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 654 transitions. [2021-03-11 02:34:05,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 654 transitions. [2021-03-11 02:34:05,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:05,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 654 transitions. [2021-03-11 02:34:05,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.45454545454545) internal successors, (654), 11 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,405 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,405 INFO L185 Difference]: Start difference. First operand has 93 places, 57 transitions, 196 flow. Second operand 11 states and 654 transitions. [2021-03-11 02:34:05,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 457 flow [2021-03-11 02:34:05,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 375 flow, removed 26 selfloop flow, removed 15 redundant places. [2021-03-11 02:34:05,407 INFO L241 Difference]: Finished difference. Result has 89 places, 57 transitions, 188 flow [2021-03-11 02:34:05,407 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2021-03-11 02:34:05,407 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-03-11 02:34:05,407 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 188 flow [2021-03-11 02:34:05,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,408 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:05,408 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:05,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:34:05,408 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:05,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:05,408 INFO L82 PathProgramCache]: Analyzing trace with hash 306398858, now seen corresponding path program 1 times [2021-03-11 02:34:05,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:05,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632543984] [2021-03-11 02:34:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:05,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,444 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:05,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:05,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:05,472 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:05,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:05,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:05,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632543984] [2021-03-11 02:34:05,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:05,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:34:05,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793303489] [2021-03-11 02:34:05,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:34:05,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:05,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:34:05,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:34:05,488 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:34:05,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:05,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:34:05,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:05,608 INFO L129 PetriNetUnfolder]: 106/341 cut-off events. [2021-03-11 02:34:05,608 INFO L130 PetriNetUnfolder]: For 320/326 co-relation queries the response was YES. [2021-03-11 02:34:05,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 341 events. 106/341 cut-off events. For 320/326 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1783 event pairs, 39 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 705. Up to 84 conditions per place. [2021-03-11 02:34:05,610 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 10 selfloop transitions, 6 changer transitions 19/82 dead transitions. [2021-03-11 02:34:05,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 308 flow [2021-03-11 02:34:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:34:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:34:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 577 transitions. [2021-03-11 02:34:05,612 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8663663663663663 [2021-03-11 02:34:05,612 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 577 transitions. [2021-03-11 02:34:05,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 577 transitions. [2021-03-11 02:34:05,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:05,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 577 transitions. [2021-03-11 02:34:05,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.11111111111111) internal successors, (577), 9 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,614 INFO L185 Difference]: Start difference. First operand has 89 places, 57 transitions, 188 flow. Second operand 9 states and 577 transitions. [2021-03-11 02:34:05,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 308 flow [2021-03-11 02:34:05,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 278 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-03-11 02:34:05,617 INFO L241 Difference]: Finished difference. Result has 86 places, 60 transitions, 214 flow [2021-03-11 02:34:05,617 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2021-03-11 02:34:05,617 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2021-03-11 02:34:05,617 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 214 flow [2021-03-11 02:34:05,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,618 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:05,618 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:05,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:34:05,618 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:05,618 INFO L82 PathProgramCache]: Analyzing trace with hash 246595460, now seen corresponding path program 1 times [2021-03-11 02:34:05,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:05,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810649458] [2021-03-11 02:34:05,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:05,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,674 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:05,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:05,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:05,695 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:05,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:05,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:05,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810649458] [2021-03-11 02:34:05,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:05,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:05,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198267184] [2021-03-11 02:34:05,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:05,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:05,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:05,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:05,705 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:34:05,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:05,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:34:05,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:05,813 INFO L129 PetriNetUnfolder]: 57/221 cut-off events. [2021-03-11 02:34:05,813 INFO L130 PetriNetUnfolder]: For 327/377 co-relation queries the response was YES. [2021-03-11 02:34:05,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 221 events. 57/221 cut-off events. For 327/377 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 900 event pairs, 4 based on Foata normal form. 14/230 useless extension candidates. Maximal degree in co-relation 627. Up to 76 conditions per place. [2021-03-11 02:34:05,814 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 10 selfloop transitions, 9 changer transitions 19/85 dead transitions. [2021-03-11 02:34:05,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 467 flow [2021-03-11 02:34:05,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:34:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:34:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 640 transitions. [2021-03-11 02:34:05,816 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2021-03-11 02:34:05,816 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 640 transitions. [2021-03-11 02:34:05,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 640 transitions. [2021-03-11 02:34:05,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:05,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 640 transitions. [2021-03-11 02:34:05,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,819 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,820 INFO L185 Difference]: Start difference. First operand has 86 places, 60 transitions, 214 flow. Second operand 10 states and 640 transitions. [2021-03-11 02:34:05,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 467 flow [2021-03-11 02:34:05,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 443 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-11 02:34:05,822 INFO L241 Difference]: Finished difference. Result has 92 places, 63 transitions, 282 flow [2021-03-11 02:34:05,822 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=92, PETRI_TRANSITIONS=63} [2021-03-11 02:34:05,822 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 24 predicate places. [2021-03-11 02:34:05,822 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 63 transitions, 282 flow [2021-03-11 02:34:05,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,823 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:05,823 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:05,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:34:05,823 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:05,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2039546738, now seen corresponding path program 1 times [2021-03-11 02:34:05,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:05,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160267021] [2021-03-11 02:34:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:05,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:05,878 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:34:05,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:34:05,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:34:05,898 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:34:05,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:05,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:05,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:05,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160267021] [2021-03-11 02:34:05,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:05,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:34:05,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993754558] [2021-03-11 02:34:05,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:34:05,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:05,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:34:05,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:34:05,906 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-03-11 02:34:05,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 63 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:05,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:05,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-03-11 02:34:05,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:06,015 INFO L129 PetriNetUnfolder]: 16/103 cut-off events. [2021-03-11 02:34:06,015 INFO L130 PetriNetUnfolder]: For 409/458 co-relation queries the response was YES. [2021-03-11 02:34:06,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 103 events. 16/103 cut-off events. For 409/458 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 0 based on Foata normal form. 14/116 useless extension candidates. Maximal degree in co-relation 330. Up to 30 conditions per place. [2021-03-11 02:34:06,016 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 4 selfloop transitions, 12 changer transitions 13/76 dead transitions. [2021-03-11 02:34:06,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 76 transitions, 466 flow [2021-03-11 02:34:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:34:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:34:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 691 transitions. [2021-03-11 02:34:06,017 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8488943488943489 [2021-03-11 02:34:06,017 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 691 transitions. [2021-03-11 02:34:06,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 691 transitions. [2021-03-11 02:34:06,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:06,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 691 transitions. [2021-03-11 02:34:06,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,020 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,020 INFO L185 Difference]: Start difference. First operand has 92 places, 63 transitions, 282 flow. Second operand 11 states and 691 transitions. [2021-03-11 02:34:06,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 76 transitions, 466 flow [2021-03-11 02:34:06,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 341 flow, removed 49 selfloop flow, removed 15 redundant places. [2021-03-11 02:34:06,022 INFO L241 Difference]: Finished difference. Result has 89 places, 63 transitions, 242 flow [2021-03-11 02:34:06,022 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=242, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2021-03-11 02:34:06,022 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-03-11 02:34:06,022 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 242 flow [2021-03-11 02:34:06,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:34:06,023 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:34:06,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:34:06,023 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:34:06,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:34:06,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1493209069, now seen corresponding path program 1 times [2021-03-11 02:34:06,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:34:06,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548749628] [2021-03-11 02:34:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:34:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:34:06,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:06,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:06,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:06,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:34:06,060 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:34:06,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:34:06,067 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:34:06,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:34:06,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:06,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:06,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:06,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:34:06,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:34:06,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:34:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:34:06,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548749628] [2021-03-11 02:34:06,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:34:06,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:34:06,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146538773] [2021-03-11 02:34:06,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:34:06,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:34:06,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:34:06,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:34:06,104 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-03-11 02:34:06,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:34:06,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-03-11 02:34:06,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:34:06,171 INFO L129 PetriNetUnfolder]: 5/72 cut-off events. [2021-03-11 02:34:06,171 INFO L130 PetriNetUnfolder]: For 76/82 co-relation queries the response was YES. [2021-03-11 02:34:06,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 72 events. 5/72 cut-off events. For 76/82 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 143. Up to 11 conditions per place. [2021-03-11 02:34:06,171 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-03-11 02:34:06,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 61 transitions, 264 flow [2021-03-11 02:34:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:34:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:34:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 462 transitions. [2021-03-11 02:34:06,172 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7804054054054054 [2021-03-11 02:34:06,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 462 transitions. [2021-03-11 02:34:06,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 462 transitions. [2021-03-11 02:34:06,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:34:06,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 462 transitions. [2021-03-11 02:34:06,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 57.75) internal successors, (462), 8 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,175 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,175 INFO L185 Difference]: Start difference. First operand has 89 places, 63 transitions, 242 flow. Second operand 8 states and 462 transitions. [2021-03-11 02:34:06,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 61 transitions, 264 flow [2021-03-11 02:34:06,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 61 transitions, 182 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-03-11 02:34:06,176 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2021-03-11 02:34:06,176 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2021-03-11 02:34:06,176 INFO L335 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2021-03-11 02:34:06,176 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2021-03-11 02:34:06,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:34:06,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:34:06,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:34:06 BasicIcfg [2021-03-11 02:34:06,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:34:06,182 INFO L168 Benchmark]: Toolchain (without parser) took 3455.08 ms. Allocated memory was 255.9 MB in the beginning and 415.2 MB in the end (delta: 159.4 MB). Free memory was 235.1 MB in the beginning and 238.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 154.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:06,182 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:34:06,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.82 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 234.3 MB in the beginning and 309.5 MB in the end (delta: -75.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:06,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.99 ms. Allocated memory is still 346.0 MB. Free memory was 309.5 MB in the beginning and 307.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:06,185 INFO L168 Benchmark]: Boogie Preprocessor took 14.15 ms. Allocated memory is still 346.0 MB. Free memory was 307.8 MB in the beginning and 306.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:34:06,187 INFO L168 Benchmark]: RCFGBuilder took 357.03 ms. Allocated memory is still 346.0 MB. Free memory was 306.4 MB in the beginning and 283.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:06,187 INFO L168 Benchmark]: TraceAbstraction took 2685.89 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 283.9 MB in the beginning and 238.8 MB in the end (delta: 45.1 MB). Peak memory consumption was 115.8 MB. Max. memory is 16.0 GB. [2021-03-11 02:34:06,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 364.82 ms. Allocated memory was 255.9 MB in the beginning and 346.0 MB in the end (delta: 90.2 MB). Free memory was 234.3 MB in the beginning and 309.5 MB in the end (delta: -75.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.99 ms. Allocated memory is still 346.0 MB. Free memory was 309.5 MB in the beginning and 307.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.15 ms. Allocated memory is still 346.0 MB. Free memory was 307.8 MB in the beginning and 306.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 357.03 ms. Allocated memory is still 346.0 MB. Free memory was 306.4 MB in the beginning and 283.9 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2685.89 ms. Allocated memory was 346.0 MB in the beginning and 415.2 MB in the end (delta: 69.2 MB). Free memory was 283.9 MB in the beginning and 238.8 MB in the end (delta: 45.1 MB). Peak memory consumption was 115.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 31.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2616.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1468.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 110 SDtfs, 245 SDslu, 366 SDs, 0 SdLazy, 384 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 271.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1046.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=7, InterpolantAutomatonStates: 95, 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: 18.8ms SsaConstructionTime, 133.9ms SatisfiabilityAnalysisTime, 800.0ms InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 400 ConstructedInterpolants, 0 QuantifiedInterpolants, 1662 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...