/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 00:28:46,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 00:28:46,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 00:28:46,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 00:28:46,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 00:28:46,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 00:28:46,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 00:28:46,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 00:28:46,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 00:28:46,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 00:28:46,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 00:28:46,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 00:28:46,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 00:28:46,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 00:28:46,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 00:28:46,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 00:28:46,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 00:28:46,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 00:28:46,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 00:28:46,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 00:28:46,775 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.epf [2021-08-13 00:28:46,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 00:28:46,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 00:28:46,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 00:28:46,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 00:28:46,806 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 00:28:46,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 00:28:46,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 00:28:46,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 00:28:46,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 00:28:46,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 00:28:46,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 00:28:46,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 00:28:46,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 00:28:46,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 00:28:46,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 00:28:46,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 00:28:46,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 00:28:46,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 00:28:46,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 00:28:46,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 00:28:46,809 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 00:28:46,809 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 00:28:46,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 00:28:46,810 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 00:28:46,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 00:28:47,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 00:28:47,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 00:28:47,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 00:28:47,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 00:28:47,180 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 00:28:47,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-08-13 00:28:47,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2703b5c99/a0474e2dea28478fa6a773462d27ab2d/FLAGfd756976a [2021-08-13 00:28:47,673 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 00:28:47,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.opt.i [2021-08-13 00:28:47,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2703b5c99/a0474e2dea28478fa6a773462d27ab2d/FLAGfd756976a [2021-08-13 00:28:47,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2703b5c99/a0474e2dea28478fa6a773462d27ab2d [2021-08-13 00:28:47,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 00:28:47,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 00:28:47,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 00:28:47,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 00:28:47,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 00:28:47,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:28:47" (1/1) ... [2021-08-13 00:28:47,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b5be70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:47, skipping insertion in model container [2021-08-13 00:28:47,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:28:47" (1/1) ... [2021-08-13 00:28:47,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 00:28:47,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 00:28:47,865 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/safe005_tso.opt.i[949,962] [2021-08-13 00:28:48,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:28:48,072 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 00:28:48,089 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/safe005_tso.opt.i[949,962] [2021-08-13 00:28:48,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:28:48,199 INFO L208 MainTranslator]: Completed translation [2021-08-13 00:28:48,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48 WrapperNode [2021-08-13 00:28:48,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 00:28:48,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 00:28:48,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 00:28:48,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 00:28:48,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 00:28:48,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 00:28:48,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 00:28:48,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 00:28:48,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (1/1) ... [2021-08-13 00:28:48,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 00:28:48,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 00:28:48,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 00:28:48,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 00:28:48,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (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 00:28:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 00:28:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 00:28:48,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 00:28:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 00:28:48,415 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 00:28:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 00:28:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 00:28:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 00:28:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 00:28:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 00:28:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 00:28:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 00:28:48,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 00:28:48,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 00:28:48,419 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 00:28:48,828 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 00:28:48,828 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 00:28:48,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:28:48 BoogieIcfgContainer [2021-08-13 00:28:48,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 00:28:48,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 00:28:48,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 00:28:48,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 00:28:48,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 12:28:47" (1/3) ... [2021-08-13 00:28:48,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481a073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:28:48, skipping insertion in model container [2021-08-13 00:28:48,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:48" (2/3) ... [2021-08-13 00:28:48,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481a073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:28:48, skipping insertion in model container [2021-08-13 00:28:48,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:28:48" (3/3) ... [2021-08-13 00:28:48,836 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.opt.i [2021-08-13 00:28:48,841 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 00:28:48,842 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 00:28:48,842 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 00:28:48,869 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,870 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,870 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,871 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,871 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,871 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,872 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,872 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,872 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,873 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,873 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,874 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,874 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,874 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,875 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,875 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,876 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,881 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,883 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,883 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,884 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,884 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,888 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,889 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,889 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,889 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,891 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,891 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,891 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,892 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:48,896 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 00:28:48,917 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 00:28:48,951 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 00:28:48,951 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 00:28:48,951 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 00:28:48,952 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 00:28:48,952 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 00:28:48,952 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 00:28:48,952 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 00:28:48,952 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 00:28:48,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 00:28:48,993 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-13 00:28:48,993 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:28:48,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 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. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 00:28:48,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 00:28:49,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-08-13 00:28:49,015 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-08-13 00:28:49,015 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:28:49,015 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:49,016 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:28:49,016 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:49,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-08-13 00:28:49,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:49,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142532594] [2021-08-13 00:28:49,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:49,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:49,287 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:49,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:49,306 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:49,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:49,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:49,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:49,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:49,355 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 00:28:49,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:49,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142532594] [2021-08-13 00:28:49,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142532594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:49,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:49,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:28:49,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732584086] [2021-08-13 00:28:49,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:28:49,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:49,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:28:49,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:28:49,386 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 00:28:49,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 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 00:28:49,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:49,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 00:28:49,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:49,726 INFO L129 PetriNetUnfolder]: 366/936 cut-off events. [2021-08-13 00:28:49,726 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:28:49,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 936 events. 366/936 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6050 event pairs, 56 based on Foata normal form. 36/944 useless extension candidates. Maximal degree in co-relation 1533. Up to 195 conditions per place. [2021-08-13 00:28:49,757 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 17 selfloop transitions, 6 changer transitions 34/110 dead transitions. [2021-08-13 00:28:49,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 343 flow [2021-08-13 00:28:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 00:28:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 00:28:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 646 transitions. [2021-08-13 00:28:49,773 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8544973544973545 [2021-08-13 00:28:49,775 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 646 transitions. [2021-08-13 00:28:49,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 646 transitions. [2021-08-13 00:28:49,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:49,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 646 transitions. [2021-08-13 00:28:49,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.77777777777777) internal successors, (646), 9 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:49,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 00:28:49,794 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 00:28:49,795 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2021-08-13 00:28:49,795 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 110 transitions, 343 flow [2021-08-13 00:28:49,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 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 00:28:49,796 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:49,796 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 00:28:49,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 00:28:49,797 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:49,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash -976545123, now seen corresponding path program 1 times [2021-08-13 00:28:49,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:49,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769002176] [2021-08-13 00:28:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:49,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:49,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:49,902 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:49,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:49,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:49,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:49,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:49,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:49,951 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 00:28:49,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:49,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769002176] [2021-08-13 00:28:49,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769002176] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:49,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:49,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:28:49,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88389721] [2021-08-13 00:28:49,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:28:49,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:49,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:28:49,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:28:49,958 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-08-13 00:28:49,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 110 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 00:28:49,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:49,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-08-13 00:28:49,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:50,237 INFO L129 PetriNetUnfolder]: 492/1296 cut-off events. [2021-08-13 00:28:50,238 INFO L130 PetriNetUnfolder]: For 162/228 co-relation queries the response was YES. [2021-08-13 00:28:50,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1296 events. 492/1296 cut-off events. For 162/228 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9619 event pairs, 46 based on Foata normal form. 18/1288 useless extension candidates. Maximal degree in co-relation 2477. Up to 229 conditions per place. [2021-08-13 00:28:50,247 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 10 selfloop transitions, 3 changer transitions 66/142 dead transitions. [2021-08-13 00:28:50,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 142 transitions, 587 flow [2021-08-13 00:28:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 00:28:50,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 00:28:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 668 transitions. [2021-08-13 00:28:50,250 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8835978835978836 [2021-08-13 00:28:50,250 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 668 transitions. [2021-08-13 00:28:50,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 668 transitions. [2021-08-13 00:28:50,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:50,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 668 transitions. [2021-08-13 00:28:50,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 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 00:28:50,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 00:28:50,255 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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 00:28:50,255 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2021-08-13 00:28:50,255 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 142 transitions, 587 flow [2021-08-13 00:28:50,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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 00:28:50,256 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:50,256 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 00:28:50,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 00:28:50,256 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:50,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:50,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2000082914, now seen corresponding path program 1 times [2021-08-13 00:28:50,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:50,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437894684] [2021-08-13 00:28:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:50,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:50,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:50,367 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:50,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:50,388 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:50,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:50,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:50,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:50,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:50,434 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 00:28:50,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:50,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437894684] [2021-08-13 00:28:50,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437894684] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:50,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:50,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:50,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270180597] [2021-08-13 00:28:50,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:50,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:50,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:50,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:50,438 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 00:28:50,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 142 transitions, 587 flow. Second operand has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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 00:28:50,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:50,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 00:28:50,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:50,827 INFO L129 PetriNetUnfolder]: 482/1257 cut-off events. [2021-08-13 00:28:50,828 INFO L130 PetriNetUnfolder]: For 256/912 co-relation queries the response was YES. [2021-08-13 00:28:50,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 1257 events. 482/1257 cut-off events. For 256/912 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 9081 event pairs, 3 based on Foata normal form. 18/1251 useless extension candidates. Maximal degree in co-relation 3291. Up to 225 conditions per place. [2021-08-13 00:28:50,834 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 19 selfloop transitions, 7 changer transitions 142/221 dead transitions. [2021-08-13 00:28:50,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 221 transitions, 1303 flow [2021-08-13 00:28:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:28:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:28:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 913 transitions. [2021-08-13 00:28:50,840 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8360805860805861 [2021-08-13 00:28:50,840 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 913 transitions. [2021-08-13 00:28:50,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 913 transitions. [2021-08-13 00:28:50,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:50,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 913 transitions. [2021-08-13 00:28:50,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.23076923076923) internal successors, (913), 13 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 00:28:50,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:50,850 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:50,851 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2021-08-13 00:28:50,851 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 221 transitions, 1303 flow [2021-08-13 00:28:50,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 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 00:28:50,851 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:50,851 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 00:28:50,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 00:28:50,852 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2048541138, now seen corresponding path program 1 times [2021-08-13 00:28:50,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:50,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885859562] [2021-08-13 00:28:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:50,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:50,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:50,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:50,953 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:50,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:50,970 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:50,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:50,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:50,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:51,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:51,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:51,013 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 00:28:51,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:51,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885859562] [2021-08-13 00:28:51,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885859562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:51,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:51,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:28:51,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311728096] [2021-08-13 00:28:51,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:28:51,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:51,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:28:51,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:28:51,018 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 00:28:51,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 221 transitions, 1303 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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 00:28:51,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:51,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 00:28:51,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:51,543 INFO L129 PetriNetUnfolder]: 507/1370 cut-off events. [2021-08-13 00:28:51,543 INFO L130 PetriNetUnfolder]: For 460/2874 co-relation queries the response was YES. [2021-08-13 00:28:51,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4635 conditions, 1370 events. 507/1370 cut-off events. For 460/2874 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10569 event pairs, 0 based on Foata normal form. 22/1372 useless extension candidates. Maximal degree in co-relation 4586. Up to 284 conditions per place. [2021-08-13 00:28:51,550 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 19 selfloop transitions, 10 changer transitions 226/308 dead transitions. [2021-08-13 00:28:51,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 308 transitions, 2419 flow [2021-08-13 00:28:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 00:28:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 00:28:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1191 transitions. [2021-08-13 00:28:51,554 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8340336134453782 [2021-08-13 00:28:51,554 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1191 transitions. [2021-08-13 00:28:51,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1191 transitions. [2021-08-13 00:28:51,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:51,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1191 transitions. [2021-08-13 00:28:51,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.05882352941177) internal successors, (1191), 17 states have internal predecessors, (1191), 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 00:28:51,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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 00:28:51,561 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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 00:28:51,561 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2021-08-13 00:28:51,561 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 308 transitions, 2419 flow [2021-08-13 00:28:51,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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 00:28:51,564 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:51,565 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 00:28:51,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 00:28:51,565 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:51,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1971754568, now seen corresponding path program 1 times [2021-08-13 00:28:51,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:51,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522339604] [2021-08-13 00:28:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:51,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:51,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:51,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:51,627 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:51,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:51,639 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:51,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:51,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:51,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:51,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:51,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:51,679 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 00:28:51,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:51,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522339604] [2021-08-13 00:28:51,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522339604] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:51,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:51,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:28:51,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616540615] [2021-08-13 00:28:51,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:28:51,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:51,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:28:51,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:28:51,682 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 00:28:51,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 308 transitions, 2419 flow. Second operand has 8 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 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 00:28:51,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:51,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 00:28:51,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:52,489 INFO L129 PetriNetUnfolder]: 681/2187 cut-off events. [2021-08-13 00:28:52,490 INFO L130 PetriNetUnfolder]: For 1018/8673 co-relation queries the response was YES. [2021-08-13 00:28:52,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 2187 events. 681/2187 cut-off events. For 1018/8673 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 20845 event pairs, 0 based on Foata normal form. 61/2228 useless extension candidates. Maximal degree in co-relation 8554. Up to 370 conditions per place. [2021-08-13 00:28:52,502 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 23 selfloop transitions, 10 changer transitions 493/579 dead transitions. [2021-08-13 00:28:52,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 579 transitions, 5963 flow [2021-08-13 00:28:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-13 00:28:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-08-13 00:28:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1749 transitions. [2021-08-13 00:28:52,507 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8328571428571429 [2021-08-13 00:28:52,507 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1749 transitions. [2021-08-13 00:28:52,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1749 transitions. [2021-08-13 00:28:52,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:52,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1749 transitions. [2021-08-13 00:28:52,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 69.96) internal successors, (1749), 25 states have internal predecessors, (1749), 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 00:28:52,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 84.0) internal successors, (2184), 26 states have internal predecessors, (2184), 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 00:28:52,517 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 84.0) internal successors, (2184), 26 states have internal predecessors, (2184), 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 00:28:52,517 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 68 predicate places. [2021-08-13 00:28:52,517 INFO L482 AbstractCegarLoop]: Abstraction has has 146 places, 579 transitions, 5963 flow [2021-08-13 00:28:52,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 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 00:28:52,517 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:52,518 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 00:28:52,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 00:28:52,518 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:52,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:52,518 INFO L82 PathProgramCache]: Analyzing trace with hash 681872180, now seen corresponding path program 2 times [2021-08-13 00:28:52,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:52,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186913997] [2021-08-13 00:28:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:52,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:52,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:52,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:52,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:52,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:52,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:52,561 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:52,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:52,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:52,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:52,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:52,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:52,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:52,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:52,628 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 00:28:52,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:52,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186913997] [2021-08-13 00:28:52,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186913997] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:52,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:52,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:52,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493515387] [2021-08-13 00:28:52,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:52,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:52,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:52,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:52,631 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-08-13 00:28:52,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 579 transitions, 5963 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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 00:28:52,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:52,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-08-13 00:28:52,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:53,245 INFO L129 PetriNetUnfolder]: 783/2716 cut-off events. [2021-08-13 00:28:53,245 INFO L130 PetriNetUnfolder]: For 1836/11247 co-relation queries the response was YES. [2021-08-13 00:28:53,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11730 conditions, 2716 events. 783/2716 cut-off events. For 1836/11247 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 28198 event pairs, 0 based on Foata normal form. 62/2757 useless extension candidates. Maximal degree in co-relation 11671. Up to 414 conditions per place. [2021-08-13 00:28:53,261 INFO L132 encePairwiseOnDemand]: 75/84 looper letters, 16 selfloop transitions, 5 changer transitions 643/722 dead transitions. [2021-08-13 00:28:53,261 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 722 transitions, 8717 flow [2021-08-13 00:28:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:28:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:28:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 948 transitions. [2021-08-13 00:28:53,264 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8681318681318682 [2021-08-13 00:28:53,265 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 948 transitions. [2021-08-13 00:28:53,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 948 transitions. [2021-08-13 00:28:53,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:53,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 948 transitions. [2021-08-13 00:28:53,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.92307692307692) internal successors, (948), 13 states have internal predecessors, (948), 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 00:28:53,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:53,270 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:53,271 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 80 predicate places. [2021-08-13 00:28:53,271 INFO L482 AbstractCegarLoop]: Abstraction has has 158 places, 722 transitions, 8717 flow [2021-08-13 00:28:53,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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 00:28:53,271 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:53,271 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] [2021-08-13 00:28:53,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 00:28:53,272 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:53,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:53,272 INFO L82 PathProgramCache]: Analyzing trace with hash -292325279, now seen corresponding path program 1 times [2021-08-13 00:28:53,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:53,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230121256] [2021-08-13 00:28:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:53,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:53,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:53,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:53,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:53,332 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:28:53,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:28:53,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:53,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:28:53,362 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:28:53,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:53,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:53,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:53,372 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 00:28:53,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:53,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230121256] [2021-08-13 00:28:53,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230121256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:53,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:53,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:28:53,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201569319] [2021-08-13 00:28:53,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:28:53,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:53,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:28:53,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:28:53,374 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 00:28:53,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 722 transitions, 8717 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:53,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:53,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 00:28:53,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:54,718 INFO L129 PetriNetUnfolder]: 2768/7127 cut-off events. [2021-08-13 00:28:54,718 INFO L130 PetriNetUnfolder]: For 4396/6830 co-relation queries the response was YES. [2021-08-13 00:28:54,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22863 conditions, 7127 events. 2768/7127 cut-off events. For 4396/6830 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 78122 event pairs, 60 based on Foata normal form. 39/6565 useless extension candidates. Maximal degree in co-relation 22801. Up to 1789 conditions per place. [2021-08-13 00:28:54,771 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 24 selfloop transitions, 17 changer transitions 450/618 dead transitions. [2021-08-13 00:28:54,772 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 618 transitions, 7127 flow [2021-08-13 00:28:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 00:28:54,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 00:28:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-08-13 00:28:54,774 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-08-13 00:28:54,774 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-08-13 00:28:54,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-08-13 00:28:54,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:54,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-08-13 00:28:54,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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 00:28:54,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:54,779 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:54,779 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 89 predicate places. [2021-08-13 00:28:54,779 INFO L482 AbstractCegarLoop]: Abstraction has has 167 places, 618 transitions, 7127 flow [2021-08-13 00:28:54,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:54,779 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:54,779 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 00:28:54,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 00:28:54,780 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:54,780 INFO L82 PathProgramCache]: Analyzing trace with hash -436214456, now seen corresponding path program 1 times [2021-08-13 00:28:54,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:54,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261277322] [2021-08-13 00:28:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:54,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:54,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:54,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:54,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:54,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:54,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:54,846 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:28:54,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:28:54,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:54,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:28:54,872 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:28:54,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:54,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:54,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:54,883 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 00:28:54,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:54,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261277322] [2021-08-13 00:28:54,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261277322] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:54,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:54,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:54,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836525197] [2021-08-13 00:28:54,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:54,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:54,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:54,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:54,886 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 00:28:54,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 618 transitions, 7127 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 00:28:54,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:54,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 00:28:54,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:55,925 INFO L129 PetriNetUnfolder]: 2130/5456 cut-off events. [2021-08-13 00:28:55,925 INFO L130 PetriNetUnfolder]: For 2188/5505 co-relation queries the response was YES. [2021-08-13 00:28:55,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16976 conditions, 5456 events. 2130/5456 cut-off events. For 2188/5505 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 58635 event pairs, 0 based on Foata normal form. 602/5596 useless extension candidates. Maximal degree in co-relation 16911. Up to 1683 conditions per place. [2021-08-13 00:28:55,962 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 22 selfloop transitions, 44 changer transitions 315/456 dead transitions. [2021-08-13 00:28:55,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 456 transitions, 4861 flow [2021-08-13 00:28:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:28:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:28:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2021-08-13 00:28:55,965 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8855311355311355 [2021-08-13 00:28:55,965 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2021-08-13 00:28:55,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2021-08-13 00:28:55,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:55,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2021-08-13 00:28:55,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 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 00:28:55,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:55,971 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:55,971 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 95 predicate places. [2021-08-13 00:28:55,971 INFO L482 AbstractCegarLoop]: Abstraction has has 173 places, 456 transitions, 4861 flow [2021-08-13 00:28:55,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 00:28:55,972 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:55,972 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, 1] [2021-08-13 00:28:55,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 00:28:55,972 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:55,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1909595965, now seen corresponding path program 1 times [2021-08-13 00:28:55,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:55,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074147959] [2021-08-13 00:28:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:56,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:56,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:56,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:56,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:56,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:56,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:56,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:56,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:56,023 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:28:56,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:28:56,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:56,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:28:56,053 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:28:56,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:56,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:56,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:56,068 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 00:28:56,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:56,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074147959] [2021-08-13 00:28:56,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074147959] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:56,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:56,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:28:56,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781134378] [2021-08-13 00:28:56,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:28:56,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:56,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:28:56,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:28:56,070 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 00:28:56,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 456 transitions, 4861 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 00:28:56,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:56,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 00:28:56,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:57,076 INFO L129 PetriNetUnfolder]: 1947/4801 cut-off events. [2021-08-13 00:28:57,076 INFO L130 PetriNetUnfolder]: For 1686/6540 co-relation queries the response was YES. [2021-08-13 00:28:57,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16833 conditions, 4801 events. 1947/4801 cut-off events. For 1686/6540 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 51662 event pairs, 0 based on Foata normal form. 713/5109 useless extension candidates. Maximal degree in co-relation 16765. Up to 1574 conditions per place. [2021-08-13 00:28:57,100 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 19 selfloop transitions, 48 changer transitions 120/262 dead transitions. [2021-08-13 00:28:57,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 262 transitions, 2403 flow [2021-08-13 00:28:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 00:28:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 00:28:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1176 transitions. [2021-08-13 00:28:57,103 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 00:28:57,103 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1176 transitions. [2021-08-13 00:28:57,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1176 transitions. [2021-08-13 00:28:57,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:57,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1176 transitions. [2021-08-13 00:28:57,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.5) internal successors, (1176), 16 states have internal predecessors, (1176), 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 00:28:57,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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 00:28:57,108 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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 00:28:57,108 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 83 predicate places. [2021-08-13 00:28:57,108 INFO L482 AbstractCegarLoop]: Abstraction has has 161 places, 262 transitions, 2403 flow [2021-08-13 00:28:57,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 00:28:57,108 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:57,109 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, 1, 1, 1] [2021-08-13 00:28:57,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 00:28:57,109 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:57,109 INFO L82 PathProgramCache]: Analyzing trace with hash 991901530, now seen corresponding path program 1 times [2021-08-13 00:28:57,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:57,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587960034] [2021-08-13 00:28:57,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:57,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:57,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:57,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:57,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:57,144 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:57,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:57,154 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:57,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:57,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:57,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:57,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:57,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:57,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:57,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:57,197 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 00:28:57,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:57,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587960034] [2021-08-13 00:28:57,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587960034] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:57,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:57,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:57,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172452034] [2021-08-13 00:28:57,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:57,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:57,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:57,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:57,199 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-08-13 00:28:57,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 262 transitions, 2403 flow. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 00:28:57,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:57,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-08-13 00:28:57,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:57,826 INFO L129 PetriNetUnfolder]: 2107/5191 cut-off events. [2021-08-13 00:28:57,827 INFO L130 PetriNetUnfolder]: For 2275/4257 co-relation queries the response was YES. [2021-08-13 00:28:57,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18560 conditions, 5191 events. 2107/5191 cut-off events. For 2275/4257 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 56360 event pairs, 0 based on Foata normal form. 14/4751 useless extension candidates. Maximal degree in co-relation 18485. Up to 1693 conditions per place. [2021-08-13 00:28:57,853 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 0 selfloop transitions, 0 changer transitions 282/282 dead transitions. [2021-08-13 00:28:57,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 282 transitions, 2901 flow [2021-08-13 00:28:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 00:28:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 00:28:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 533 transitions. [2021-08-13 00:28:57,854 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7931547619047619 [2021-08-13 00:28:57,854 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 533 transitions. [2021-08-13 00:28:57,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 533 transitions. [2021-08-13 00:28:57,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:57,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 533 transitions. [2021-08-13 00:28:57,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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 00:28:57,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 00:28:57,857 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 00:28:57,857 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 88 predicate places. [2021-08-13 00:28:57,857 INFO L482 AbstractCegarLoop]: Abstraction has has 166 places, 282 transitions, 2901 flow [2021-08-13 00:28:57,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 00:28:57,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown