/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:29:31,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:29:31,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:29:31,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 07:29:31,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:29:31,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:29:31,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:29:31,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:29:31,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:29:31,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:29:31,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:29:31,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:29:31,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:29:31,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:29:31,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:29:31,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:29:31,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:29:31,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:29:31,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:29:31,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:29:31,829 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 [2021-06-13 07:29:31,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:29:31,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:29:31,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:29:31,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:29:31,869 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:29:31,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:29:31,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:29:31,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:29:31,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:29:31,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:29:31,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:29:31,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:29:31,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:29:31,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:29:31,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:29:31,871 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:29:31,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:29:31,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:29:31,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:29:31,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:29:31,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:29:31,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:29:31,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:29:31,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:29:31,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:29:31,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:29:31,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:29:31,873 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:29:31,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:29:31,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:29:32,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:29:32,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:29:32,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:29:32,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:29:32,221 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:29:32,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2021-06-13 07:29:32,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e480855c/2cf8748570db4b4aa28807090e36c121/FLAG2c254dbca [2021-06-13 07:29:32,808 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:29:32,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.opt.i [2021-06-13 07:29:32,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e480855c/2cf8748570db4b4aa28807090e36c121/FLAG2c254dbca [2021-06-13 07:29:33,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e480855c/2cf8748570db4b4aa28807090e36c121 [2021-06-13 07:29:33,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:29:33,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:29:33,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:29:33,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:29:33,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:29:33,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f07e6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33, skipping insertion in model container [2021-06-13 07:29:33,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:29:33,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:29:33,464 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/safe009_pso.opt.i[949,962] [2021-06-13 07:29:33,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:29:33,704 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:29:33,714 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/safe009_pso.opt.i[949,962] [2021-06-13 07:29:33,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:29:33,826 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:29:33,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33 WrapperNode [2021-06-13 07:29:33,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:29:33,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:29:33,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:29:33,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:29:33,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:29:33,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:29:33,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:29:33,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:29:33,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... [2021-06-13 07:29:33,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:29:33,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:29:33,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:29:33,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:29:33,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:29:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:29:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:29:33,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:29:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:29:34,000 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:29:34,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:29:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:29:34,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:29:34,001 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:29:34,002 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:29:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:29:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:29:34,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:29:34,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:29:34,003 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:29:34,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:29:34,333 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:29:34,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:29:34 BoogieIcfgContainer [2021-06-13 07:29:34,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:29:34,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:29:34,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:29:34,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:29:34,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:29:33" (1/3) ... [2021-06-13 07:29:34,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726c7cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:29:34, skipping insertion in model container [2021-06-13 07:29:34,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:29:33" (2/3) ... [2021-06-13 07:29:34,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726c7cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:29:34, skipping insertion in model container [2021-06-13 07:29:34,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:29:34" (3/3) ... [2021-06-13 07:29:34,342 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.opt.i [2021-06-13 07:29:34,347 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:29:34,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:29:34,348 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:29:34,379 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,380 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,380 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,380 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,380 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,381 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,381 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,382 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,383 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,384 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,384 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,385 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,387 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,387 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,391 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,391 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,393 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,393 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:29:34,395 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:29:34,414 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:29:34,431 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:29:34,431 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:29:34,431 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:29:34,431 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:29:34,431 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:29:34,431 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:29:34,431 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:29:34,432 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:29:34,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:29:34,479 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-06-13 07:29:34,480 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:34,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-06-13 07:29:34,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:29:34,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-06-13 07:29:34,505 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-06-13 07:29:34,505 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:34,506 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:34,506 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] [2021-06-13 07:29:34,507 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:34,511 INFO L82 PathProgramCache]: Analyzing trace with hash -710190392, now seen corresponding path program 1 times [2021-06-13 07:29:34,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:34,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791423773] [2021-06-13 07:29:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:34,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:34,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:34,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:34,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:34,829 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:34,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:34,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:34,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:34,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:34,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:34,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:34,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:34,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:34,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:34,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791423773] [2021-06-13 07:29:34,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791423773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:34,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:34,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:29:34,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724304698] [2021-06-13 07:29:34,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:29:34,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:34,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:29:34,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:29:34,939 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 82 [2021-06-13 07:29:34,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:34,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:34,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 82 [2021-06-13 07:29:34,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:35,133 INFO L129 PetriNetUnfolder]: 3/81 cut-off events. [2021-06-13 07:29:35,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:29:35,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 81 events. 3/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 81. Up to 7 conditions per place. [2021-06-13 07:29:35,141 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 6 selfloop transitions, 2 changer transitions 11/76 dead transitions. [2021-06-13 07:29:35,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 76 transitions, 197 flow [2021-06-13 07:29:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:29:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:29:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 652 transitions. [2021-06-13 07:29:35,160 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8834688346883469 [2021-06-13 07:29:35,160 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 652 transitions. [2021-06-13 07:29:35,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 652 transitions. [2021-06-13 07:29:35,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:35,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 652 transitions. [2021-06-13 07:29:35,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.44444444444444) internal successors, (652), 9 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,181 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,184 INFO L185 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 9 states and 652 transitions. [2021-06-13 07:29:35,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 76 transitions, 197 flow [2021-06-13 07:29:35,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 194 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:29:35,193 INFO L241 Difference]: Finished difference. Result has 88 places, 65 transitions, 156 flow [2021-06-13 07:29:35,195 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2021-06-13 07:29:35,195 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2021-06-13 07:29:35,196 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 156 flow [2021-06-13 07:29:35,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,196 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:35,196 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:35,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:29:35,197 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:35,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:35,197 INFO L82 PathProgramCache]: Analyzing trace with hash -157935543, now seen corresponding path program 1 times [2021-06-13 07:29:35,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:35,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255337926] [2021-06-13 07:29:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:35,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:35,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:35,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:35,306 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:35,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:35,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:35,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:35,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:35,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:35,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255337926] [2021-06-13 07:29:35,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255337926] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:35,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:35,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:35,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933805236] [2021-06-13 07:29:35,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:35,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:35,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:35,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:35,368 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:35,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:35,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:35,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:35,556 INFO L129 PetriNetUnfolder]: 4/86 cut-off events. [2021-06-13 07:29:35,557 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2021-06-13 07:29:35,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 86 events. 4/86 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 133. Up to 7 conditions per place. [2021-06-13 07:29:35,559 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 6 selfloop transitions, 4 changer transitions 12/77 dead transitions. [2021-06-13 07:29:35,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 247 flow [2021-06-13 07:29:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:29:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:29:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 704 transitions. [2021-06-13 07:29:35,561 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8585365853658536 [2021-06-13 07:29:35,561 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 704 transitions. [2021-06-13 07:29:35,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 704 transitions. [2021-06-13 07:29:35,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:35,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 704 transitions. [2021-06-13 07:29:35,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.4) internal successors, (704), 10 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,566 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,566 INFO L185 Difference]: Start difference. First operand has 88 places, 65 transitions, 156 flow. Second operand 10 states and 704 transitions. [2021-06-13 07:29:35,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 247 flow [2021-06-13 07:29:35,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 77 transitions, 213 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-13 07:29:35,571 INFO L241 Difference]: Finished difference. Result has 90 places, 65 transitions, 170 flow [2021-06-13 07:29:35,571 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=170, PETRI_PLACES=90, PETRI_TRANSITIONS=65} [2021-06-13 07:29:35,572 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2021-06-13 07:29:35,572 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 65 transitions, 170 flow [2021-06-13 07:29:35,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,572 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:35,573 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:35,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:29:35,573 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1397814130, now seen corresponding path program 1 times [2021-06-13 07:29:35,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:35,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334438932] [2021-06-13 07:29:35,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:35,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:35,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:35,683 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:35,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:35,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:35,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:35,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:35,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:35,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334438932] [2021-06-13 07:29:35,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334438932] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:35,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:35,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:29:35,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076343494] [2021-06-13 07:29:35,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:29:35,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:35,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:29:35,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:29:35,723 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:35,723 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 65 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,723 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:35,723 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:35,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:35,839 INFO L129 PetriNetUnfolder]: 25/138 cut-off events. [2021-06-13 07:29:35,839 INFO L130 PetriNetUnfolder]: For 64/71 co-relation queries the response was YES. [2021-06-13 07:29:35,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 138 events. 25/138 cut-off events. For 64/71 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 385 event pairs, 5 based on Foata normal form. 4/140 useless extension candidates. Maximal degree in co-relation 242. Up to 33 conditions per place. [2021-06-13 07:29:35,841 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 10 selfloop transitions, 3 changer transitions 19/87 dead transitions. [2021-06-13 07:29:35,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 87 transitions, 300 flow [2021-06-13 07:29:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:29:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:29:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 646 transitions. [2021-06-13 07:29:35,843 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8753387533875339 [2021-06-13 07:29:35,843 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 646 transitions. [2021-06-13 07:29:35,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 646 transitions. [2021-06-13 07:29:35,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:35,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 646 transitions. [2021-06-13 07:29:35,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.77777777777777) internal successors, (646), 9 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,847 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,847 INFO L185 Difference]: Start difference. First operand has 90 places, 65 transitions, 170 flow. Second operand 9 states and 646 transitions. [2021-06-13 07:29:35,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 87 transitions, 300 flow [2021-06-13 07:29:35,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 254 flow, removed 18 selfloop flow, removed 10 redundant places. [2021-06-13 07:29:35,850 INFO L241 Difference]: Finished difference. Result has 89 places, 67 transitions, 187 flow [2021-06-13 07:29:35,850 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=187, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2021-06-13 07:29:35,851 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2021-06-13 07:29:35,851 INFO L482 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 187 flow [2021-06-13 07:29:35,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:35,851 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:35,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:29:35,851 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:35,852 INFO L82 PathProgramCache]: Analyzing trace with hash -497726490, now seen corresponding path program 1 times [2021-06-13 07:29:35,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:35,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860153277] [2021-06-13 07:29:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:35,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:35,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:35,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:35,915 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:35,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:35,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:35,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:35,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:35,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:35,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:35,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860153277] [2021-06-13 07:29:35,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860153277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:35,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:35,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:35,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449056255] [2021-06-13 07:29:35,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:35,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:35,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:35,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:35,966 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-06-13 07:29:35,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 187 flow. Second operand has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:35,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:35,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-06-13 07:29:35,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:36,112 INFO L129 PetriNetUnfolder]: 14/118 cut-off events. [2021-06-13 07:29:36,112 INFO L130 PetriNetUnfolder]: For 155/177 co-relation queries the response was YES. [2021-06-13 07:29:36,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 118 events. 14/118 cut-off events. For 155/177 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 267 event pairs, 5 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 264. Up to 25 conditions per place. [2021-06-13 07:29:36,114 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 7 selfloop transitions, 4 changer transitions 14/79 dead transitions. [2021-06-13 07:29:36,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 329 flow [2021-06-13 07:29:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:29:36,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:29:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2021-06-13 07:29:36,119 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8623693379790941 [2021-06-13 07:29:36,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2021-06-13 07:29:36,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2021-06-13 07:29:36,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:36,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2021-06-13 07:29:36,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,122 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,122 INFO L185 Difference]: Start difference. First operand has 89 places, 67 transitions, 187 flow. Second operand 7 states and 495 transitions. [2021-06-13 07:29:36,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 329 flow [2021-06-13 07:29:36,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 79 transitions, 308 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-06-13 07:29:36,128 INFO L241 Difference]: Finished difference. Result has 89 places, 65 transitions, 184 flow [2021-06-13 07:29:36,129 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2021-06-13 07:29:36,129 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 13 predicate places. [2021-06-13 07:29:36,129 INFO L482 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 184 flow [2021-06-13 07:29:36,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,129 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:36,130 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:36,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:29:36,130 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:36,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1942232659, now seen corresponding path program 1 times [2021-06-13 07:29:36,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:36,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745950951] [2021-06-13 07:29:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:36,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:36,238 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:36,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:36,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:36,270 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:36,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:36,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:36,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:36,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745950951] [2021-06-13 07:29:36,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745950951] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:36,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:36,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:29:36,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183320019] [2021-06-13 07:29:36,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:29:36,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:36,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:29:36,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:29:36,287 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:36,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 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) [2021-06-13 07:29:36,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:36,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:36,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:36,441 INFO L129 PetriNetUnfolder]: 106/327 cut-off events. [2021-06-13 07:29:36,442 INFO L130 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2021-06-13 07:29:36,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 327 events. 106/327 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1570 event pairs, 14 based on Foata normal form. 8/325 useless extension candidates. Maximal degree in co-relation 626. Up to 84 conditions per place. [2021-06-13 07:29:36,448 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 10 selfloop transitions, 6 changer transitions 19/90 dead transitions. [2021-06-13 07:29:36,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 90 transitions, 304 flow [2021-06-13 07:29:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:29:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:29:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2021-06-13 07:29:36,450 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8794037940379403 [2021-06-13 07:29:36,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2021-06-13 07:29:36,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2021-06-13 07:29:36,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:36,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2021-06-13 07:29:36,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,454 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,454 INFO L185 Difference]: Start difference. First operand has 89 places, 65 transitions, 184 flow. Second operand 9 states and 649 transitions. [2021-06-13 07:29:36,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 90 transitions, 304 flow [2021-06-13 07:29:36,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 292 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-06-13 07:29:36,459 INFO L241 Difference]: Finished difference. Result has 94 places, 68 transitions, 228 flow [2021-06-13 07:29:36,459 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=228, PETRI_PLACES=94, PETRI_TRANSITIONS=68} [2021-06-13 07:29:36,459 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 18 predicate places. [2021-06-13 07:29:36,459 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 68 transitions, 228 flow [2021-06-13 07:29:36,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 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) [2021-06-13 07:29:36,460 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:36,460 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:36,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:29:36,460 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:36,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:36,461 INFO L82 PathProgramCache]: Analyzing trace with hash -455113405, now seen corresponding path program 1 times [2021-06-13 07:29:36,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:36,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393587042] [2021-06-13 07:29:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:36,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:36,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:36,540 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:36,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:36,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:36,568 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:36,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:36,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:36,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:36,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393587042] [2021-06-13 07:29:36,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393587042] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:36,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:36,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:29:36,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815602954] [2021-06-13 07:29:36,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:29:36,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:36,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:29:36,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:29:36,592 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:36,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 68 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:36,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:36,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:36,751 INFO L129 PetriNetUnfolder]: 57/217 cut-off events. [2021-06-13 07:29:36,751 INFO L130 PetriNetUnfolder]: For 326/366 co-relation queries the response was YES. [2021-06-13 07:29:36,753 INFO L84 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 217 events. 57/217 cut-off events. For 326/366 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 819 event pairs, 4 based on Foata normal form. 13/227 useless extension candidates. Maximal degree in co-relation 618. Up to 76 conditions per place. [2021-06-13 07:29:36,754 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 10 selfloop transitions, 9 changer transitions 19/93 dead transitions. [2021-06-13 07:29:36,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 481 flow [2021-06-13 07:29:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:29:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:29:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 720 transitions. [2021-06-13 07:29:36,756 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8780487804878049 [2021-06-13 07:29:36,756 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 720 transitions. [2021-06-13 07:29:36,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 720 transitions. [2021-06-13 07:29:36,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:36,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 720 transitions. [2021-06-13 07:29:36,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.0) internal successors, (720), 10 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,760 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,760 INFO L185 Difference]: Start difference. First operand has 94 places, 68 transitions, 228 flow. Second operand 10 states and 720 transitions. [2021-06-13 07:29:36,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 481 flow [2021-06-13 07:29:36,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 451 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-06-13 07:29:36,764 INFO L241 Difference]: Finished difference. Result has 99 places, 71 transitions, 290 flow [2021-06-13 07:29:36,764 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2021-06-13 07:29:36,764 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 23 predicate places. [2021-06-13 07:29:36,764 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 290 flow [2021-06-13 07:29:36,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,765 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:36,765 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:36,765 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:29:36,765 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1203130646, now seen corresponding path program 1 times [2021-06-13 07:29:36,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:36,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280719452] [2021-06-13 07:29:36,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:36,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:36,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:36,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:29:36,814 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:29:36,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:29:36,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:29:36,868 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:29:36,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:36,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:36,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:36,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:36,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280719452] [2021-06-13 07:29:36,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280719452] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:36,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:36,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:29:36,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585467187] [2021-06-13 07:29:36,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:29:36,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:36,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:29:36,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:29:36,881 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:29:36,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:36,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:36,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:29:36,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:37,041 INFO L129 PetriNetUnfolder]: 16/111 cut-off events. [2021-06-13 07:29:37,041 INFO L130 PetriNetUnfolder]: For 398/437 co-relation queries the response was YES. [2021-06-13 07:29:37,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 111 events. 16/111 cut-off events. For 398/437 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 216 event pairs, 0 based on Foata normal form. 14/124 useless extension candidates. Maximal degree in co-relation 335. Up to 30 conditions per place. [2021-06-13 07:29:37,042 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 4 selfloop transitions, 12 changer transitions 13/84 dead transitions. [2021-06-13 07:29:37,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 84 transitions, 474 flow [2021-06-13 07:29:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:29:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:29:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 779 transitions. [2021-06-13 07:29:37,044 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2021-06-13 07:29:37,044 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 779 transitions. [2021-06-13 07:29:37,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 779 transitions. [2021-06-13 07:29:37,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:37,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 779 transitions. [2021-06-13 07:29:37,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.81818181818181) internal successors, (779), 11 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:37,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:37,048 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 82.0) internal successors, (984), 12 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:37,048 INFO L185 Difference]: Start difference. First operand has 99 places, 71 transitions, 290 flow. Second operand 11 states and 779 transitions. [2021-06-13 07:29:37,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 84 transitions, 474 flow [2021-06-13 07:29:37,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 84 transitions, 357 flow, removed 47 selfloop flow, removed 14 redundant places. [2021-06-13 07:29:37,052 INFO L241 Difference]: Finished difference. Result has 97 places, 71 transitions, 258 flow [2021-06-13 07:29:37,052 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=258, PETRI_PLACES=97, PETRI_TRANSITIONS=71} [2021-06-13 07:29:37,052 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2021-06-13 07:29:37,052 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 71 transitions, 258 flow [2021-06-13 07:29:37,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:37,053 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:29:37,053 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:29:37,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:29:37,053 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:29:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:29:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash -129570409, now seen corresponding path program 1 times [2021-06-13 07:29:37,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:29:37,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85198657] [2021-06-13 07:29:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:29:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:29:37,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:37,087 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:29:37,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:29:37,096 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:29:37,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:29:37,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:37,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:29:37,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:29:37,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:29:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:29:37,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:29:37,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85198657] [2021-06-13 07:29:37,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85198657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:29:37,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:29:37,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:29:37,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326407835] [2021-06-13 07:29:37,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:29:37,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:29:37,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:29:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:29:37,138 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-06-13 07:29:37,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 71 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 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) [2021-06-13 07:29:37,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:29:37,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-06-13 07:29:37,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:29:37,206 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-06-13 07:29:37,206 INFO L130 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2021-06-13 07:29:37,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 80 events. 5/80 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 150. Up to 11 conditions per place. [2021-06-13 07:29:37,207 INFO L132 encePairwiseOnDemand]: 75/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-06-13 07:29:37,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 69 transitions, 278 flow [2021-06-13 07:29:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 07:29:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-13 07:29:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2021-06-13 07:29:37,208 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8191056910569106 [2021-06-13 07:29:37,208 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2021-06-13 07:29:37,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2021-06-13 07:29:37,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:29:37,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2021-06-13 07:29:37,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 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) [2021-06-13 07:29:37,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:37,211 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:29:37,211 INFO L185 Difference]: Start difference. First operand has 97 places, 71 transitions, 258 flow. Second operand 6 states and 403 transitions. [2021-06-13 07:29:37,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 69 transitions, 278 flow [2021-06-13 07:29:37,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 69 transitions, 196 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-06-13 07:29:37,212 INFO L241 Difference]: Finished difference. Result has 81 places, 0 transitions, 0 flow [2021-06-13 07:29:37,213 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=81, PETRI_TRANSITIONS=0} [2021-06-13 07:29:37,213 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2021-06-13 07:29:37,213 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 0 transitions, 0 flow [2021-06-13 07:29:37,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 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) [2021-06-13 07:29:37,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:29:37,216 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:29:37,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:29:37 BasicIcfg [2021-06-13 07:29:37,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:29:37,219 INFO L168 Benchmark]: Toolchain (without parser) took 3946.49 ms. Allocated memory was 196.1 MB in the beginning and 235.9 MB in the end (delta: 39.8 MB). Free memory was 158.9 MB in the beginning and 141.1 MB in the end (delta: 17.9 MB). Peak memory consumption was 58.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:37,219 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 196.1 MB. Free memory is still 177.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:29:37,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.45 ms. Allocated memory is still 196.1 MB. Free memory was 158.7 MB in the beginning and 157.7 MB in the end (delta: 997.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:37,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.87 ms. Allocated memory is still 196.1 MB. Free memory was 157.7 MB in the beginning and 156.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:37,220 INFO L168 Benchmark]: Boogie Preprocessor took 31.51 ms. Allocated memory is still 196.1 MB. Free memory was 156.2 MB in the beginning and 154.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:37,221 INFO L168 Benchmark]: RCFGBuilder took 414.01 ms. Allocated memory is still 196.1 MB. Free memory was 154.6 MB in the beginning and 131.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:37,221 INFO L168 Benchmark]: TraceAbstraction took 2881.05 ms. Allocated memory was 196.1 MB in the beginning and 235.9 MB in the end (delta: 39.8 MB). Free memory was 130.5 MB in the beginning and 141.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-06-13 07:29:37,223 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 196.1 MB. Free memory is still 177.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 553.45 ms. Allocated memory is still 196.1 MB. Free memory was 158.7 MB in the beginning and 157.7 MB in the end (delta: 997.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.87 ms. Allocated memory is still 196.1 MB. Free memory was 157.7 MB in the beginning and 156.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.51 ms. Allocated memory is still 196.1 MB. Free memory was 156.2 MB in the beginning and 154.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 414.01 ms. Allocated memory is still 196.1 MB. Free memory was 154.6 MB in the beginning and 131.0 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2881.05 ms. Allocated memory was 196.1 MB in the beginning and 235.9 MB in the end (delta: 39.8 MB). Free memory was 130.5 MB in the beginning and 141.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2787.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1362.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 55.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 143 SDslu, 206 SDs, 0 SdLazy, 299 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 967.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=6, InterpolantAutomatonStates: 71, 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: 34.7ms SsaConstructionTime, 198.2ms SatisfiabilityAnalysisTime, 933.7ms InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 1284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...