/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 10:59:21,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 10:59:21,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 10:59:21,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 10:59:21,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 10:59:21,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 10:59:21,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 10:59:21,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-Hitting.epf [2021-08-13 10:59:21,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 10:59:21,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 10:59:21,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 10:59:21,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 10:59:21,829 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 10:59:21,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 10:59:21,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 10:59:21,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 10:59:21,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 10:59:21,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 10:59:21,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 10:59:21,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 10:59:21,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 10:59:21,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 10:59:21,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 10:59:21,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 10:59:21,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 10:59:21,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 10:59:21,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 10:59:21,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 10:59:21,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 10:59:21,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 10:59:21,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 10:59:21,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 10:59:21,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 10:59:21,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 10:59:21,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 10:59:21,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 10:59:21,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 10:59:21,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 10:59:21,834 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 10:59:21,834 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 10:59:21,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 10:59:22,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 10:59:22,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 10:59:22,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 10:59:22,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 10:59:22,179 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 10:59:22,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-08-13 10:59:22,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324eb8e9a/1655599b244247cca0d74151affea95d/FLAG3a25ffb10 [2021-08-13 10:59:22,790 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 10:59:22,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2021-08-13 10:59:22,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324eb8e9a/1655599b244247cca0d74151affea95d/FLAG3a25ffb10 [2021-08-13 10:59:23,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/324eb8e9a/1655599b244247cca0d74151affea95d [2021-08-13 10:59:23,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 10:59:23,242 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 10:59:23,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 10:59:23,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 10:59:23,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 10:59:23,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1093979c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23, skipping insertion in model container [2021-08-13 10:59:23,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 10:59:23,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 10:59:23,453 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/safe015_pso.opt.i[949,962] [2021-08-13 10:59:23,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 10:59:23,632 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 10:59:23,642 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/safe015_pso.opt.i[949,962] [2021-08-13 10:59:23,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 10:59:23,725 INFO L208 MainTranslator]: Completed translation [2021-08-13 10:59:23,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23 WrapperNode [2021-08-13 10:59:23,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 10:59:23,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 10:59:23,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 10:59:23,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 10:59:23,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 10:59:23,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 10:59:23,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 10:59:23,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 10:59:23,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... [2021-08-13 10:59:23,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 10:59:23,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 10:59:23,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 10:59:23,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 10:59:23,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 10:59:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 10:59:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 10:59:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 10:59:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 10:59:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 10:59:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 10:59:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 10:59:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 10:59:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 10:59:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 10:59:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 10:59:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 10:59:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 10:59:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 10:59:23,877 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 10:59:24,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 10:59:24,155 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 10:59:24,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 10:59:24 BoogieIcfgContainer [2021-08-13 10:59:24,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 10:59:24,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 10:59:24,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 10:59:24,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 10:59:24,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 10:59:23" (1/3) ... [2021-08-13 10:59:24,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b2d88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 10:59:24, skipping insertion in model container [2021-08-13 10:59:24,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 10:59:23" (2/3) ... [2021-08-13 10:59:24,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b2d88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 10:59:24, skipping insertion in model container [2021-08-13 10:59:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 10:59:24" (3/3) ... [2021-08-13 10:59:24,163 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2021-08-13 10:59:24,167 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 10:59:24,168 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 10:59:24,168 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 10:59:24,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,196 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,196 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,197 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,197 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,198 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,199 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,200 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,201 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,201 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,202 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,202 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,203 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,204 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,205 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,205 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,209 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,209 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,211 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,212 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,212 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,212 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 10:59:24,214 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 10:59:24,234 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 10:59:24,252 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 10:59:24,252 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 10:59:24,252 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 10:59:24,252 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 10:59:24,252 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 10:59:24,252 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 10:59:24,252 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 10:59:24,252 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 10:59:24,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 10:59:24,296 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-08-13 10:59:24,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 10:59:24,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 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. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 10:59:24,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 10:59:24,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-08-13 10:59:24,325 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-08-13 10:59:24,326 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 10:59:24,326 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:24,326 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:24,327 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:24,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:24,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-08-13 10:59:24,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:24,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79682058] [2021-08-13 10:59:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:24,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:24,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:24,728 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 10:59:24,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 10:59:24,755 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 10:59:24,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 10:59:24,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:24,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:24,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:24,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:24,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:24,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:24,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:24,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79682058] [2021-08-13 10:59:24,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79682058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:24,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:24,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 10:59:24,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889482013] [2021-08-13 10:59:24,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 10:59:24,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:24,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 10:59:24,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 10:59:24,843 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 10:59:24,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:24,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:24,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 10:59:24,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:25,288 INFO L129 PetriNetUnfolder]: 645/1449 cut-off events. [2021-08-13 10:59:25,289 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 10:59:25,296 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2489 conditions, 1449 events. 645/1449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9747 event pairs, 136 based on Foata normal form. 48/1456 useless extension candidates. Maximal degree in co-relation 2456. Up to 305 conditions per place. [2021-08-13 10:59:25,305 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 19 selfloop transitions, 7 changer transitions 43/120 dead transitions. [2021-08-13 10:59:25,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 120 transitions, 387 flow [2021-08-13 10:59:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 10:59:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 10:59:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 640 transitions. [2021-08-13 10:59:25,328 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.856760374832664 [2021-08-13 10:59:25,328 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 640 transitions. [2021-08-13 10:59:25,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 640 transitions. [2021-08-13 10:59:25,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:25,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 640 transitions. [2021-08-13 10:59:25,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.11111111111111) internal successors, (640), 9 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,347 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,348 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2021-08-13 10:59:25,348 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 120 transitions, 387 flow [2021-08-13 10:59:25,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 64.66666666666667) internal successors, (388), 6 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,349 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:25,349 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:25,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 10:59:25,350 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:25,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1466580262, now seen corresponding path program 1 times [2021-08-13 10:59:25,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:25,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122182286] [2021-08-13 10:59:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:25,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:25,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:25,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:25,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:25,445 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 10:59:25,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 10:59:25,458 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 10:59:25,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 10:59:25,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:25,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:25,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:25,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:25,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:25,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:25,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:25,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122182286] [2021-08-13 10:59:25,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122182286] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:25,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:25,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 10:59:25,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170800124] [2021-08-13 10:59:25,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 10:59:25,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:25,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 10:59:25,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 10:59:25,510 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 10:59:25,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 120 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:25,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 10:59:25,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:25,951 INFO L129 PetriNetUnfolder]: 713/1670 cut-off events. [2021-08-13 10:59:25,951 INFO L130 PetriNetUnfolder]: For 49/1157 co-relation queries the response was YES. [2021-08-13 10:59:25,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 1670 events. 713/1670 cut-off events. For 49/1157 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12027 event pairs, 15 based on Foata normal form. 38/1671 useless extension candidates. Maximal degree in co-relation 3979. Up to 371 conditions per place. [2021-08-13 10:59:25,960 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 25 selfloop transitions, 9 changer transitions 147/232 dead transitions. [2021-08-13 10:59:25,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 232 transitions, 1197 flow [2021-08-13 10:59:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 10:59:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 10:59:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-08-13 10:59:25,963 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8405931417979611 [2021-08-13 10:59:25,963 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-08-13 10:59:25,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-08-13 10:59:25,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:25,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-08-13 10:59:25,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,968 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,969 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2021-08-13 10:59:25,969 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 232 transitions, 1197 flow [2021-08-13 10:59:25,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:25,970 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:25,970 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:25,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 10:59:25,970 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1161954026, now seen corresponding path program 1 times [2021-08-13 10:59:25,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:25,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171331913] [2021-08-13 10:59:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:26,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:26,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:26,090 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 10:59:26,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 10:59:26,104 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 10:59:26,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 10:59:26,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:26,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:26,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:26,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:26,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171331913] [2021-08-13 10:59:26,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171331913] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:26,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:26,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 10:59:26,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397177492] [2021-08-13 10:59:26,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 10:59:26,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 10:59:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 10:59:26,146 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 10:59:26,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 232 transitions, 1197 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:26,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:26,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 10:59:26,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:26,567 INFO L129 PetriNetUnfolder]: 859/2062 cut-off events. [2021-08-13 10:59:26,568 INFO L130 PetriNetUnfolder]: For 164/2377 co-relation queries the response was YES. [2021-08-13 10:59:26,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6386 conditions, 2062 events. 859/2062 cut-off events. For 164/2377 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 16026 event pairs, 10 based on Foata normal form. 32/2065 useless extension candidates. Maximal degree in co-relation 6341. Up to 544 conditions per place. [2021-08-13 10:59:26,583 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 28 selfloop transitions, 19 changer transitions 331/429 dead transitions. [2021-08-13 10:59:26,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 429 transitions, 3135 flow [2021-08-13 10:59:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 10:59:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 10:59:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 915 transitions. [2021-08-13 10:59:26,588 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8480074142724745 [2021-08-13 10:59:26,588 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 915 transitions. [2021-08-13 10:59:26,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 915 transitions. [2021-08-13 10:59:26,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:26,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 915 transitions. [2021-08-13 10:59:26,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.38461538461539) internal successors, (915), 13 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:26,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:26,594 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:26,594 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 32 predicate places. [2021-08-13 10:59:26,594 INFO L482 AbstractCegarLoop]: Abstraction has has 109 places, 429 transitions, 3135 flow [2021-08-13 10:59:26,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:26,594 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:26,595 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:26,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 10:59:26,595 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:26,596 INFO L82 PathProgramCache]: Analyzing trace with hash -221960421, now seen corresponding path program 1 times [2021-08-13 10:59:26,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:26,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799648594] [2021-08-13 10:59:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:26,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:26,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:26,675 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 10:59:26,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 10:59:26,689 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 10:59:26,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 10:59:26,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:26,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:26,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:26,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:26,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:26,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799648594] [2021-08-13 10:59:26,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799648594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:26,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:26,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 10:59:26,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515885156] [2021-08-13 10:59:26,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 10:59:26,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:26,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 10:59:26,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 10:59:26,728 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 10:59:26,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 429 transitions, 3135 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:26,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:26,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 10:59:26,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:27,215 INFO L129 PetriNetUnfolder]: 900/2346 cut-off events. [2021-08-13 10:59:27,215 INFO L130 PetriNetUnfolder]: For 361/4492 co-relation queries the response was YES. [2021-08-13 10:59:27,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8528 conditions, 2346 events. 900/2346 cut-off events. For 361/4492 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 19996 event pairs, 5 based on Foata normal form. 48/2370 useless extension candidates. Maximal degree in co-relation 8477. Up to 613 conditions per place. [2021-08-13 10:59:27,226 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 35 selfloop transitions, 21 changer transitions 526/633 dead transitions. [2021-08-13 10:59:27,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 633 transitions, 5931 flow [2021-08-13 10:59:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 10:59:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 10:59:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 910 transitions. [2021-08-13 10:59:27,229 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8433734939759037 [2021-08-13 10:59:27,229 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 910 transitions. [2021-08-13 10:59:27,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 910 transitions. [2021-08-13 10:59:27,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:27,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 910 transitions. [2021-08-13 10:59:27,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,233 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,234 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2021-08-13 10:59:27,234 INFO L482 AbstractCegarLoop]: Abstraction has has 121 places, 633 transitions, 5931 flow [2021-08-13 10:59:27,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,234 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:27,234 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:27,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 10:59:27,234 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:27,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:27,235 INFO L82 PathProgramCache]: Analyzing trace with hash 809279979, now seen corresponding path program 1 times [2021-08-13 10:59:27,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:27,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756300522] [2021-08-13 10:59:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:27,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:27,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:27,317 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 10:59:27,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 10:59:27,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:27,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:27,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:27,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:27,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756300522] [2021-08-13 10:59:27,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756300522] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:27,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:27,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 10:59:27,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306771045] [2021-08-13 10:59:27,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 10:59:27,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:27,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 10:59:27,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 10:59:27,354 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-08-13 10:59:27,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 633 transitions, 5931 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,355 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:27,355 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-08-13 10:59:27,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:27,840 INFO L129 PetriNetUnfolder]: 1193/2928 cut-off events. [2021-08-13 10:59:27,840 INFO L130 PetriNetUnfolder]: For 1606/4930 co-relation queries the response was YES. [2021-08-13 10:59:27,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12085 conditions, 2928 events. 1193/2928 cut-off events. For 1606/4930 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 25581 event pairs, 0 based on Foata normal form. 12/2924 useless extension candidates. Maximal degree in co-relation 12031. Up to 848 conditions per place. [2021-08-13 10:59:27,855 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 10 selfloop transitions, 10 changer transitions 672/779 dead transitions. [2021-08-13 10:59:27,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 779 transitions, 8103 flow [2021-08-13 10:59:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 10:59:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 10:59:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2021-08-13 10:59:27,858 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8821954484605087 [2021-08-13 10:59:27,858 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2021-08-13 10:59:27,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2021-08-13 10:59:27,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:27,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2021-08-13 10:59:27,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,864 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,864 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 52 predicate places. [2021-08-13 10:59:27,865 INFO L482 AbstractCegarLoop]: Abstraction has has 129 places, 779 transitions, 8103 flow [2021-08-13 10:59:27,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:27,865 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:27,865 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:27,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 10:59:27,866 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:27,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:27,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1029975339, now seen corresponding path program 1 times [2021-08-13 10:59:27,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:27,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464164139] [2021-08-13 10:59:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:27,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:27,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:27,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:27,942 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 10:59:27,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 10:59:27,957 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 10:59:27,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 10:59:27,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:27,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:27,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:27,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:28,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:28,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464164139] [2021-08-13 10:59:28,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464164139] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:28,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:28,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 10:59:28,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22290107] [2021-08-13 10:59:28,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 10:59:28,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:28,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 10:59:28,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-13 10:59:28,006 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 10:59:28,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 779 transitions, 8103 flow. Second operand has 8 states, 8 states have (on average 64.75) internal successors, (518), 8 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:28,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:28,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 10:59:28,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:28,926 INFO L129 PetriNetUnfolder]: 1480/3833 cut-off events. [2021-08-13 10:59:28,926 INFO L130 PetriNetUnfolder]: For 2096/14472 co-relation queries the response was YES. [2021-08-13 10:59:28,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18239 conditions, 3833 events. 1480/3833 cut-off events. For 2096/14472 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 36726 event pairs, 0 based on Foata normal form. 102/3915 useless extension candidates. Maximal degree in co-relation 18179. Up to 1070 conditions per place. [2021-08-13 10:59:28,951 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 30 selfloop transitions, 20 changer transitions 899/1000 dead transitions. [2021-08-13 10:59:28,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 1000 transitions, 12359 flow [2021-08-13 10:59:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-13 10:59:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-08-13 10:59:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1454 transitions. [2021-08-13 10:59:28,955 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8341939185312679 [2021-08-13 10:59:28,955 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1454 transitions. [2021-08-13 10:59:28,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1454 transitions. [2021-08-13 10:59:28,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:28,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1454 transitions. [2021-08-13 10:59:28,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 69.23809523809524) internal successors, (1454), 21 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:28,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 83.0) internal successors, (1826), 22 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:28,963 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 83.0) internal successors, (1826), 22 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:28,963 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 72 predicate places. [2021-08-13 10:59:28,963 INFO L482 AbstractCegarLoop]: Abstraction has has 149 places, 1000 transitions, 12359 flow [2021-08-13 10:59:28,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 64.75) internal successors, (518), 8 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:28,963 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:28,963 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:28,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 10:59:28,964 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:28,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1755727225, now seen corresponding path program 2 times [2021-08-13 10:59:28,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:28,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825644124] [2021-08-13 10:59:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:29,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:29,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:29,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:29,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:29,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:29,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:29,041 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 10:59:29,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 10:59:29,054 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 10:59:29,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 10:59:29,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:29,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:29,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:29,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:29,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:29,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:29,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:29,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:29,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825644124] [2021-08-13 10:59:29,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825644124] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:29,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:29,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 10:59:29,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593059004] [2021-08-13 10:59:29,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 10:59:29,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:29,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 10:59:29,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-13 10:59:29,094 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-08-13 10:59:29,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 1000 transitions, 12359 flow. Second operand has 8 states, 8 states have (on average 64.75) internal successors, (518), 8 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:29,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:29,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-08-13 10:59:29,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:30,115 INFO L129 PetriNetUnfolder]: 1585/4072 cut-off events. [2021-08-13 10:59:30,115 INFO L130 PetriNetUnfolder]: For 2582/20018 co-relation queries the response was YES. [2021-08-13 10:59:30,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22659 conditions, 4072 events. 1585/4072 cut-off events. For 2582/20018 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 39250 event pairs, 1 based on Foata normal form. 87/4139 useless extension candidates. Maximal degree in co-relation 22593. Up to 1175 conditions per place. [2021-08-13 10:59:30,138 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 25 selfloop transitions, 12 changer transitions 1102/1190 dead transitions. [2021-08-13 10:59:30,138 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 1190 transitions, 16995 flow [2021-08-13 10:59:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 10:59:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 10:59:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1173 transitions. [2021-08-13 10:59:30,146 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8313253012048193 [2021-08-13 10:59:30,147 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1173 transitions. [2021-08-13 10:59:30,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1173 transitions. [2021-08-13 10:59:30,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:30,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1173 transitions. [2021-08-13 10:59:30,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 69.0) internal successors, (1173), 17 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:30,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:30,155 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:30,155 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 88 predicate places. [2021-08-13 10:59:30,156 INFO L482 AbstractCegarLoop]: Abstraction has has 165 places, 1190 transitions, 16995 flow [2021-08-13 10:59:30,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 64.75) internal successors, (518), 8 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:30,156 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:30,156 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:30,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 10:59:30,156 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:30,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:30,157 INFO L82 PathProgramCache]: Analyzing trace with hash 799776452, now seen corresponding path program 1 times [2021-08-13 10:59:30,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:30,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214498961] [2021-08-13 10:59:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:30,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:30,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:30,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:30,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:30,209 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 10:59:30,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 10:59:30,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:30,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 10:59:30,237 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 10:59:30,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:30,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:30,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:30,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:30,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214498961] [2021-08-13 10:59:30,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214498961] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:30,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:30,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 10:59:30,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621225561] [2021-08-13 10:59:30,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 10:59:30,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:30,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 10:59:30,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 10:59:30,249 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 10:59:30,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 1190 transitions, 16995 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:30,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:30,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 10:59:30,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:31,227 INFO L129 PetriNetUnfolder]: 1812/4708 cut-off events. [2021-08-13 10:59:31,227 INFO L130 PetriNetUnfolder]: For 3336/4452 co-relation queries the response was YES. [2021-08-13 10:59:31,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18702 conditions, 4708 events. 1812/4708 cut-off events. For 3336/4452 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 47226 event pairs, 39 based on Foata normal form. 37/4425 useless extension candidates. Maximal degree in co-relation 18633. Up to 1015 conditions per place. [2021-08-13 10:59:31,265 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 24 selfloop transitions, 17 changer transitions 501/688 dead transitions. [2021-08-13 10:59:31,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 688 transitions, 9261 flow [2021-08-13 10:59:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 10:59:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 10:59:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-08-13 10:59:31,268 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8831325301204819 [2021-08-13 10:59:31,269 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-08-13 10:59:31,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-08-13 10:59:31,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:31,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-08-13 10:59:31,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:31,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:31,273 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:31,273 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2021-08-13 10:59:31,273 INFO L482 AbstractCegarLoop]: Abstraction has has 174 places, 688 transitions, 9261 flow [2021-08-13 10:59:31,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:31,273 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:31,274 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:31,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 10:59:31,274 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:31,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:31,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1672669371, now seen corresponding path program 1 times [2021-08-13 10:59:31,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:31,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61071246] [2021-08-13 10:59:31,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:31,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:31,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:31,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:31,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:31,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:31,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:31,327 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 10:59:31,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 10:59:31,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:31,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 10:59:31,354 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 10:59:31,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:31,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:31,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:31,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:31,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:31,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61071246] [2021-08-13 10:59:31,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61071246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:31,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:31,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 10:59:31,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169052013] [2021-08-13 10:59:31,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 10:59:31,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:31,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 10:59:31,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 10:59:31,371 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 10:59:31,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 688 transitions, 9261 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:31,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:31,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 10:59:31,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:32,015 INFO L129 PetriNetUnfolder]: 1091/3034 cut-off events. [2021-08-13 10:59:32,015 INFO L130 PetriNetUnfolder]: For 1605/3739 co-relation queries the response was YES. [2021-08-13 10:59:32,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 3034 events. 1091/3034 cut-off events. For 1605/3739 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 30148 event pairs, 0 based on Foata normal form. 347/3158 useless extension candidates. Maximal degree in co-relation 9781. Up to 824 conditions per place. [2021-08-13 10:59:32,035 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 18 selfloop transitions, 44 changer transitions 208/347 dead transitions. [2021-08-13 10:59:32,035 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 347 transitions, 3877 flow [2021-08-13 10:59:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 10:59:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 10:59:32,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2021-08-13 10:59:32,038 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8841519925857275 [2021-08-13 10:59:32,038 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2021-08-13 10:59:32,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2021-08-13 10:59:32,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:32,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2021-08-13 10:59:32,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,043 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,043 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 106 predicate places. [2021-08-13 10:59:32,043 INFO L482 AbstractCegarLoop]: Abstraction has has 183 places, 347 transitions, 3877 flow [2021-08-13 10:59:32,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,044 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 10:59:32,044 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 10:59:32,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 10:59:32,044 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 10:59:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 10:59:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash 988019022, now seen corresponding path program 1 times [2021-08-13 10:59:32,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 10:59:32,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392594104] [2021-08-13 10:59:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 10:59:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 10:59:32,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:32,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:32,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:32,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:32,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:32,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:32,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:32,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 10:59:32,097 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 10:59:32,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 10:59:32,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:32,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 10:59:32,126 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 10:59:32,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 10:59:32,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 10:59:32,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 10:59:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 10:59:32,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 10:59:32,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392594104] [2021-08-13 10:59:32,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392594104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 10:59:32,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 10:59:32,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 10:59:32,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914456995] [2021-08-13 10:59:32,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 10:59:32,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 10:59:32,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 10:59:32,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 10:59:32,137 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 10:59:32,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 347 transitions, 3877 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 10:59:32,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 10:59:32,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 10:59:32,694 INFO L129 PetriNetUnfolder]: 963/2629 cut-off events. [2021-08-13 10:59:32,694 INFO L130 PetriNetUnfolder]: For 1262/4252 co-relation queries the response was YES. [2021-08-13 10:59:32,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9189 conditions, 2629 events. 963/2629 cut-off events. For 1262/4252 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 26476 event pairs, 0 based on Foata normal form. 391/2826 useless extension candidates. Maximal degree in co-relation 9114. Up to 759 conditions per place. [2021-08-13 10:59:32,707 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 0 selfloop transitions, 0 changer transitions 238/238 dead transitions. [2021-08-13 10:59:32,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 238 transitions, 2275 flow [2021-08-13 10:59:32,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 10:59:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 10:59:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1160 transitions. [2021-08-13 10:59:32,710 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8734939759036144 [2021-08-13 10:59:32,711 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1160 transitions. [2021-08-13 10:59:32,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1160 transitions. [2021-08-13 10:59:32,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 10:59:32,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1160 transitions. [2021-08-13 10:59:32,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,720 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,720 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 80 predicate places. [2021-08-13 10:59:32,720 INFO L482 AbstractCegarLoop]: Abstraction has has 157 places, 238 transitions, 2275 flow [2021-08-13 10:59:32,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 10:59:32,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown