/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 16:24:05,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 16:24:05,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 16:24:05,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 16:24:05,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 16:24:05,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 16:24:05,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 16:24:05,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 16:24:05,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 16:24:05,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 16:24:05,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 16:24:05,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 16:24:05,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 16:24:05,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 16:24:05,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 16:24:05,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 16:24:05,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 16:24:05,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 16:24:05,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 16:24:05,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 16:24:05,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 16:24:05,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 16:24:05,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 16:24:05,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 16:24:05,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 16:24:05,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 16:24:05,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 16:24:05,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 16:24:05,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl-Hitting.epf [2021-08-13 16:24:05,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 16:24:05,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 16:24:05,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 16:24:05,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 16:24:05,764 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 16:24:05,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 16:24:05,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 16:24:05,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 16:24:05,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 16:24:05,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 16:24:05,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 16:24:05,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 16:24:05,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 16:24:05,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 16:24:05,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 16:24:05,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 16:24:05,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 16:24:05,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 16:24:05,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 16:24:05,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 16:24:05,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 16:24:05,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 16:24:05,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 16:24:05,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 16:24:05,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 16:24:05,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 16:24:05,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 16:24:05,769 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 16:24:05,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 16:24:05,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 16:24:05,769 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 16:24:05,769 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 16:24:05,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 16:24:05,770 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 16:24:06,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 16:24:06,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 16:24:06,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 16:24:06,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 16:24:06,151 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 16:24:06,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2021-08-13 16:24:06,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3ef4a33/966e08789888471db84850d190668ed2/FLAG37c030dc0 [2021-08-13 16:24:06,639 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 16:24:06,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2021-08-13 16:24:06,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3ef4a33/966e08789888471db84850d190668ed2/FLAG37c030dc0 [2021-08-13 16:24:06,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3ef4a33/966e08789888471db84850d190668ed2 [2021-08-13 16:24:06,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 16:24:06,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 16:24:06,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 16:24:06,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 16:24:06,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 16:24:06,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:24:06" (1/1) ... [2021-08-13 16:24:06,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46283fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:06, skipping insertion in model container [2021-08-13 16:24:06,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:24:06" (1/1) ... [2021-08-13 16:24:06,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 16:24:06,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 16:24:06,919 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i[950,963] [2021-08-13 16:24:07,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:24:07,150 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 16:24:07,161 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i[950,963] [2021-08-13 16:24:07,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:24:07,266 INFO L208 MainTranslator]: Completed translation [2021-08-13 16:24:07,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07 WrapperNode [2021-08-13 16:24:07,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 16:24:07,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 16:24:07,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 16:24:07,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 16:24:07,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 16:24:07,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 16:24:07,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 16:24:07,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 16:24:07,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... [2021-08-13 16:24:07,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 16:24:07,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 16:24:07,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 16:24:07,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 16:24:07,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 16:24:07,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 16:24:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 16:24:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 16:24:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 16:24:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 16:24:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 16:24:07,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 16:24:07,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 16:24:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 16:24:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 16:24:07,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 16:24:07,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 16:24:07,415 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 16:24:07,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 16:24:07,753 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 16:24:07,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:24:07 BoogieIcfgContainer [2021-08-13 16:24:07,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 16:24:07,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 16:24:07,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 16:24:07,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 16:24:07,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 04:24:06" (1/3) ... [2021-08-13 16:24:07,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8982e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:24:07, skipping insertion in model container [2021-08-13 16:24:07,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:24:07" (2/3) ... [2021-08-13 16:24:07,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8982e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:24:07, skipping insertion in model container [2021-08-13 16:24:07,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:24:07" (3/3) ... [2021-08-13 16:24:07,761 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2021-08-13 16:24:07,766 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 16:24:07,767 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 16:24:07,768 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 16:24:07,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,806 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,807 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,807 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,808 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,809 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,810 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,810 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,811 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,811 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,812 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,814 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,815 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,815 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,820 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,820 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:24:07,828 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 16:24:07,848 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 16:24:07,875 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 16:24:07,875 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 16:24:07,875 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 16:24:07,875 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 16:24:07,876 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 16:24:07,876 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 16:24:07,876 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 16:24:07,876 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 16:24:07,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-08-13 16:24:07,953 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-08-13 16:24:07,953 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:24:07,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-08-13 16:24:07,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2021-08-13 16:24:07,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2021-08-13 16:24:07,986 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2021-08-13 16:24:07,987 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:24:07,987 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:24:07,988 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:24:07,988 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:24:07,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:24:07,993 INFO L82 PathProgramCache]: Analyzing trace with hash -593502858, now seen corresponding path program 1 times [2021-08-13 16:24:08,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:24:08,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324138599] [2021-08-13 16:24:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:24:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:24:08,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:08,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:08,343 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 16:24:08,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:08,365 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:24:08,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:24:08,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:08,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:08,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:24:08,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:24:08,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324138599] [2021-08-13 16:24:08,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324138599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:24:08,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:24:08,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:24:08,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121132006] [2021-08-13 16:24:08,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:24:08,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:24:08,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:24:08,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:24:08,448 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-08-13 16:24:08,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:08,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:24:08,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-08-13 16:24:08,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:24:08,613 INFO L129 PetriNetUnfolder]: 11/95 cut-off events. [2021-08-13 16:24:08,614 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:24:08,614 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 95 events. 11/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 182 event pairs, 5 based on Foata normal form. 5/98 useless extension candidates. Maximal degree in co-relation 111. Up to 18 conditions per place. [2021-08-13 16:24:08,617 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 8 selfloop transitions, 2 changer transitions 14/67 dead transitions. [2021-08-13 16:24:08,617 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 186 flow [2021-08-13 16:24:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 16:24:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 16:24:08,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 504 transitions. [2021-08-13 16:24:08,635 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2021-08-13 16:24:08,635 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 504 transitions. [2021-08-13 16:24:08,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 504 transitions. [2021-08-13 16:24:08,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:24:08,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 504 transitions. [2021-08-13 16:24:08,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:08,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:08,651 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:08,651 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2021-08-13 16:24:08,651 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 186 flow [2021-08-13 16:24:08,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:08,652 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:24:08,652 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:24:08,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 16:24:08,653 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:24:08,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:24:08,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1221235819, now seen corresponding path program 1 times [2021-08-13 16:24:08,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:24:08,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635720437] [2021-08-13 16:24:08,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:24:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:24:08,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:08,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:08,741 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 16:24:08,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:08,749 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:24:08,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:24:08,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:08,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:08,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:08,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:08,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:24:08,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:24:08,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635720437] [2021-08-13 16:24:08,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635720437] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:24:08,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:24:08,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:24:08,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556924148] [2021-08-13 16:24:08,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:24:08,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:24:08,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:24:08,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:24:08,796 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-08-13 16:24:08,796 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 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) [2021-08-13 16:24:08,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:24:08,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-08-13 16:24:08,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:24:09,171 INFO L129 PetriNetUnfolder]: 53/237 cut-off events. [2021-08-13 16:24:09,171 INFO L130 PetriNetUnfolder]: For 33/54 co-relation queries the response was YES. [2021-08-13 16:24:09,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 237 events. 53/237 cut-off events. For 33/54 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1112 event pairs, 0 based on Foata normal form. 6/241 useless extension candidates. Maximal degree in co-relation 426. Up to 58 conditions per place. [2021-08-13 16:24:09,175 INFO L132 encePairwiseOnDemand]: 57/67 looper letters, 13 selfloop transitions, 8 changer transitions 61/124 dead transitions. [2021-08-13 16:24:09,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 564 flow [2021-08-13 16:24:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 16:24:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 16:24:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 924 transitions. [2021-08-13 16:24:09,179 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8112379280070237 [2021-08-13 16:24:09,179 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 924 transitions. [2021-08-13 16:24:09,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 924 transitions. [2021-08-13 16:24:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:24:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 924 transitions. [2021-08-13 16:24:09,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,190 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,192 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2021-08-13 16:24:09,192 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 124 transitions, 564 flow [2021-08-13 16:24:09,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 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) [2021-08-13 16:24:09,193 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:24:09,194 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:24:09,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 16:24:09,194 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:24:09,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:24:09,195 INFO L82 PathProgramCache]: Analyzing trace with hash 919545297, now seen corresponding path program 1 times [2021-08-13 16:24:09,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:24:09,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418591791] [2021-08-13 16:24:09,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:24:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:24:09,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:09,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:09,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:09,302 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 16:24:09,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:09,314 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:24:09,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:24:09,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:09,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:09,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:24:09,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:24:09,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418591791] [2021-08-13 16:24:09,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418591791] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:24:09,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:24:09,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 16:24:09,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403438400] [2021-08-13 16:24:09,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 16:24:09,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:24:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 16:24:09,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-13 16:24:09,362 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-08-13 16:24:09,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 124 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 52.375) internal successors, (419), 8 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:24:09,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-08-13 16:24:09,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:24:09,610 INFO L129 PetriNetUnfolder]: 50/224 cut-off events. [2021-08-13 16:24:09,610 INFO L130 PetriNetUnfolder]: For 51/181 co-relation queries the response was YES. [2021-08-13 16:24:09,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 224 events. 50/224 cut-off events. For 51/181 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1091 event pairs, 5 based on Foata normal form. 15/237 useless extension candidates. Maximal degree in co-relation 547. Up to 64 conditions per place. [2021-08-13 16:24:09,612 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 8 selfloop transitions, 4 changer transitions 83/136 dead transitions. [2021-08-13 16:24:09,612 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 136 transitions, 812 flow [2021-08-13 16:24:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:24:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:24:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 709 transitions. [2021-08-13 16:24:09,614 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8140068886337543 [2021-08-13 16:24:09,614 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 709 transitions. [2021-08-13 16:24:09,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 709 transitions. [2021-08-13 16:24:09,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:24:09,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 709 transitions. [2021-08-13 16:24:09,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 54.53846153846154) internal successors, (709), 13 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,619 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,619 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2021-08-13 16:24:09,619 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 136 transitions, 812 flow [2021-08-13 16:24:09,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 52.375) internal successors, (419), 8 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,619 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:24:09,620 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:24:09,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 16:24:09,620 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:24:09,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:24:09,620 INFO L82 PathProgramCache]: Analyzing trace with hash 348612918, now seen corresponding path program 1 times [2021-08-13 16:24:09,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:24:09,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571568852] [2021-08-13 16:24:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:24:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:24:09,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:09,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:09,698 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:24:09,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:24:09,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:24:09,729 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:24:09,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:09,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:24:09,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:24:09,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571568852] [2021-08-13 16:24:09,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571568852] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:24:09,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:24:09,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:24:09,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750156393] [2021-08-13 16:24:09,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:24:09,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:24:09,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:24:09,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:24:09,746 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2021-08-13 16:24:09,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 136 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:24:09,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2021-08-13 16:24:09,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:24:09,878 INFO L129 PetriNetUnfolder]: 84/321 cut-off events. [2021-08-13 16:24:09,878 INFO L130 PetriNetUnfolder]: For 45/57 co-relation queries the response was YES. [2021-08-13 16:24:09,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 321 events. 84/321 cut-off events. For 45/57 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1833 event pairs, 5 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 699. Up to 67 conditions per place. [2021-08-13 16:24:09,880 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 8 selfloop transitions, 5 changer transitions 58/115 dead transitions. [2021-08-13 16:24:09,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 115 transitions, 590 flow [2021-08-13 16:24:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 16:24:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 16:24:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 575 transitions. [2021-08-13 16:24:09,883 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8582089552238806 [2021-08-13 16:24:09,883 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 575 transitions. [2021-08-13 16:24:09,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 575 transitions. [2021-08-13 16:24:09,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:24:09,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 575 transitions. [2021-08-13 16:24:09,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.5) internal successors, (575), 10 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,886 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,886 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 39 predicate places. [2021-08-13 16:24:09,887 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 115 transitions, 590 flow [2021-08-13 16:24:09,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 55.166666666666664) internal successors, (331), 6 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,887 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:24:09,887 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:24:09,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 16:24:09,887 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:24:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:24:09,888 INFO L82 PathProgramCache]: Analyzing trace with hash 168503005, now seen corresponding path program 1 times [2021-08-13 16:24:09,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:24:09,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325609023] [2021-08-13 16:24:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:24:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:24:09,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:09,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:09,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:09,936 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:24:09,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:24:09,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:24:09,962 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:24:09,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:09,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:09,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:24:09,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:24:09,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325609023] [2021-08-13 16:24:09,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325609023] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:24:09,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:24:09,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:24:09,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138742958] [2021-08-13 16:24:09,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:24:09,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:24:09,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:24:09,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:24:09,975 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 67 [2021-08-13 16:24:09,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 115 transitions, 590 flow. Second operand has 7 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:09,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:24:09,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 67 [2021-08-13 16:24:09,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:24:10,186 INFO L129 PetriNetUnfolder]: 59/251 cut-off events. [2021-08-13 16:24:10,186 INFO L130 PetriNetUnfolder]: For 40/90 co-relation queries the response was YES. [2021-08-13 16:24:10,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 251 events. 59/251 cut-off events. For 40/90 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1419 event pairs, 0 based on Foata normal form. 16/252 useless extension candidates. Maximal degree in co-relation 584. Up to 53 conditions per place. [2021-08-13 16:24:10,188 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 4 selfloop transitions, 7 changer transitions 47/102 dead transitions. [2021-08-13 16:24:10,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 102 transitions, 524 flow [2021-08-13 16:24:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:24:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:24:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 738 transitions. [2021-08-13 16:24:10,191 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8473019517795637 [2021-08-13 16:24:10,191 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 738 transitions. [2021-08-13 16:24:10,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 738 transitions. [2021-08-13 16:24:10,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:24:10,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 738 transitions. [2021-08-13 16:24:10,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 56.76923076923077) internal successors, (738), 13 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,197 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,197 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 33 predicate places. [2021-08-13 16:24:10,197 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 524 flow [2021-08-13 16:24:10,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,197 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:24:10,198 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:24:10,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 16:24:10,198 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:24:10,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:24:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1221750740, now seen corresponding path program 1 times [2021-08-13 16:24:10,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:24:10,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161651785] [2021-08-13 16:24:10,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:24:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:24:10,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:10,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:10,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:10,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:10,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:10,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:24:10,292 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:24:10,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:24:10,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:10,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:10,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:10,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:24:10,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:24:10,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:24:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 16:24:10,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:24:10,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161651785] [2021-08-13 16:24:10,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161651785] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:24:10,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:24:10,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:24:10,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776619658] [2021-08-13 16:24:10,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:24:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:24:10,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:24:10,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:24:10,332 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-08-13 16:24:10,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 54.42857142857143) internal successors, (381), 7 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:24:10,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-08-13 16:24:10,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:24:10,437 INFO L129 PetriNetUnfolder]: 86/332 cut-off events. [2021-08-13 16:24:10,438 INFO L130 PetriNetUnfolder]: For 65/83 co-relation queries the response was YES. [2021-08-13 16:24:10,439 INFO L84 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 332 events. 86/332 cut-off events. For 65/83 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2124 event pairs, 0 based on Foata normal form. 1/309 useless extension candidates. Maximal degree in co-relation 829. Up to 77 conditions per place. [2021-08-13 16:24:10,440 INFO L132 encePairwiseOnDemand]: 61/67 looper letters, 0 selfloop transitions, 0 changer transitions 105/105 dead transitions. [2021-08-13 16:24:10,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 594 flow [2021-08-13 16:24:10,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 16:24:10,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 16:24:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 386 transitions. [2021-08-13 16:24:10,441 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8230277185501066 [2021-08-13 16:24:10,441 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 386 transitions. [2021-08-13 16:24:10,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 386 transitions. [2021-08-13 16:24:10,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:24:10,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 386 transitions. [2021-08-13 16:24:10,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,444 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,444 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 37 predicate places. [2021-08-13 16:24:10,444 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 594 flow [2021-08-13 16:24:10,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.42857142857143) internal successors, (381), 7 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:24:10,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown