/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/safe012_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 00:41:50,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 00:41:50,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 00:41:50,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 00:41:50,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 00:41:50,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 00:41:50,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 00:41:50,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 00:41:50,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 00:41:50,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 00:41:50,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 00:41:50,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 00:41:50,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 00:41:50,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 00:41:50,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 00:41:50,070 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 00:41:50,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 00:41:50,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 00:41:50,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 00:41:50,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 00:41:50,082 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 00:41:50,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 00:41:50,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 00:41:50,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 00:41:50,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 00:41:50,113 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 00:41:50,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 00:41:50,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 00:41:50,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 00:41:50,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 00:41:50,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 00:41:50,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 00:41:50,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 00:41:50,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 00:41:50,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 00:41:50,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 00:41:50,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 00:41:50,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 00:41:50,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 00:41:50,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 00:41:50,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 00:41:50,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 00:41:50,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 00:41:50,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 00:41:50,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 00:41:50,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 00:41:50,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 00:41:50,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 00:41:50,116 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 00:41:50,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 00:41:50,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 00:41:50,116 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 00:41:50,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 00:41:50,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 00:41:50,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 00:41:50,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 00:41:50,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 00:41:50,399 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 00:41:50,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-08-13 00:41:50,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c845b3d7/42203d6699514f3ea2f410df243a87c7/FLAGc65ceb18c [2021-08-13 00:41:50,851 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 00:41:50,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.opt.i [2021-08-13 00:41:50,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c845b3d7/42203d6699514f3ea2f410df243a87c7/FLAGc65ceb18c [2021-08-13 00:41:50,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c845b3d7/42203d6699514f3ea2f410df243a87c7 [2021-08-13 00:41:50,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 00:41:50,872 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 00:41:50,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 00:41:50,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 00:41:50,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 00:41:50,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:41:50" (1/1) ... [2021-08-13 00:41:50,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45783876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:50, skipping insertion in model container [2021-08-13 00:41:50,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:41:50" (1/1) ... [2021-08-13 00:41:50,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 00:41:50,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 00:41:51,038 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/safe012_tso.opt.i[949,962] [2021-08-13 00:41:51,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:41:51,116 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 00:41:51,123 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/safe012_tso.opt.i[949,962] [2021-08-13 00:41:51,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:41:51,183 INFO L208 MainTranslator]: Completed translation [2021-08-13 00:41:51,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51 WrapperNode [2021-08-13 00:41:51,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 00:41:51,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 00:41:51,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 00:41:51,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 00:41:51,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 00:41:51,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 00:41:51,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 00:41:51,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 00:41:51,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (1/1) ... [2021-08-13 00:41:51,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 00:41:51,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 00:41:51,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 00:41:51,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 00:41:51,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (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 00:41:51,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 00:41:51,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 00:41:51,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 00:41:51,313 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 00:41:51,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 00:41:51,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 00:41:51,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 00:41:51,315 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 00:41:51,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 00:41:51,558 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 00:41:51,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:41:51 BoogieIcfgContainer [2021-08-13 00:41:51,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 00:41:51,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 00:41:51,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 00:41:51,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 00:41:51,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 12:41:50" (1/3) ... [2021-08-13 00:41:51,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308c46aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:41:51, skipping insertion in model container [2021-08-13 00:41:51,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:41:51" (2/3) ... [2021-08-13 00:41:51,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308c46aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:41:51, skipping insertion in model container [2021-08-13 00:41:51,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:41:51" (3/3) ... [2021-08-13 00:41:51,564 INFO L111 eAbstractionObserver]: Analyzing ICFG safe012_tso.opt.i [2021-08-13 00:41:51,567 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 00:41:51,568 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 00:41:51,568 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 00:41:51,588 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,589 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,589 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,590 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,591 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,592 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,593 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,594 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,594 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,598 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,598 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,598 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,600 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,600 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:41:51,602 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 00:41:51,616 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 00:41:51,629 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 00:41:51,629 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 00:41:51,629 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 00:41:51,630 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 00:41:51,630 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 00:41:51,630 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 00:41:51,630 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 00:41:51,630 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 00:41:51,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2021-08-13 00:41:51,660 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-08-13 00:41:51,660 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:41:51,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 00:41:51,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2021-08-13 00:41:51,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2021-08-13 00:41:51,677 INFO L129 PetriNetUnfolder]: 1/69 cut-off events. [2021-08-13 00:41:51,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:41:51,677 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:51,678 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:41:51,678 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1408065288, now seen corresponding path program 1 times [2021-08-13 00:41:51,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:51,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575357542] [2021-08-13 00:41:51,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:51,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:51,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:51,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:51,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:51,904 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:41:51,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:41:51,915 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:41:51,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:41:51,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:51,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:51,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:51,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:51,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:51,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:51,969 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 00:41:51,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:51,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575357542] [2021-08-13 00:41:51,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575357542] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:51,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:51,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:41:51,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774438151] [2021-08-13 00:41:51,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:41:51,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:51,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:41:51,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:41:51,987 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 85 [2021-08-13 00:41:51,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 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 00:41:51,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:51,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 85 [2021-08-13 00:41:51,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:52,101 INFO L129 PetriNetUnfolder]: 46/195 cut-off events. [2021-08-13 00:41:52,102 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:41:52,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 195 events. 46/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 674 event pairs, 21 based on Foata normal form. 8/197 useless extension candidates. Maximal degree in co-relation 271. Up to 47 conditions per place. [2021-08-13 00:41:52,104 INFO L132 encePairwiseOnDemand]: 78/85 looper letters, 11 selfloop transitions, 2 changer transitions 19/89 dead transitions. [2021-08-13 00:41:52,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 251 flow [2021-08-13 00:41:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 00:41:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 00:41:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 657 transitions. [2021-08-13 00:41:52,114 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8588235294117647 [2021-08-13 00:41:52,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 657 transitions. [2021-08-13 00:41:52,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 657 transitions. [2021-08-13 00:41:52,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:52,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 657 transitions. [2021-08-13 00:41:52,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 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 00:41:52,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 00:41:52,127 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 00:41:52,127 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2021-08-13 00:41:52,127 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 251 flow [2021-08-13 00:41:52,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 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 00:41:52,128 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:52,128 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:41:52,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 00:41:52,128 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:52,128 INFO L82 PathProgramCache]: Analyzing trace with hash 452026023, now seen corresponding path program 1 times [2021-08-13 00:41:52,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:52,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650871458] [2021-08-13 00:41:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:52,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:52,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:52,183 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:41:52,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:41:52,190 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:41:52,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:41:52,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:52,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:52,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:52,219 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 00:41:52,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:52,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650871458] [2021-08-13 00:41:52,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650871458] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:52,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:52,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:41:52,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967263994] [2021-08-13 00:41:52,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:41:52,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:52,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:41:52,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:41:52,223 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-08-13 00:41:52,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 251 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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 00:41:52,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:52,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-08-13 00:41:52,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:52,511 INFO L129 PetriNetUnfolder]: 142/447 cut-off events. [2021-08-13 00:41:52,512 INFO L130 PetriNetUnfolder]: For 52/124 co-relation queries the response was YES. [2021-08-13 00:41:52,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 447 events. 142/447 cut-off events. For 52/124 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2403 event pairs, 5 based on Foata normal form. 10/452 useless extension candidates. Maximal degree in co-relation 936. Up to 106 conditions per place. [2021-08-13 00:41:52,515 INFO L132 encePairwiseOnDemand]: 73/85 looper letters, 16 selfloop transitions, 11 changer transitions 125/207 dead transitions. [2021-08-13 00:41:52,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 207 transitions, 1013 flow [2021-08-13 00:41:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 00:41:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 00:41:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1222 transitions. [2021-08-13 00:41:52,518 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.845674740484429 [2021-08-13 00:41:52,518 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1222 transitions. [2021-08-13 00:41:52,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1222 transitions. [2021-08-13 00:41:52,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:52,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1222 transitions. [2021-08-13 00:41:52,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 71.88235294117646) internal successors, (1222), 17 states have internal predecessors, (1222), 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 00:41:52,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 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 00:41:52,525 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 85.0) internal successors, (1530), 18 states have internal predecessors, (1530), 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 00:41:52,525 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 24 predicate places. [2021-08-13 00:41:52,525 INFO L482 AbstractCegarLoop]: Abstraction has has 103 places, 207 transitions, 1013 flow [2021-08-13 00:41:52,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 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 00:41:52,526 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:52,526 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 00:41:52,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 00:41:52,526 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1841101257, now seen corresponding path program 1 times [2021-08-13 00:41:52,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:52,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831092440] [2021-08-13 00:41:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:52,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:52,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:52,571 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:41:52,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:41:52,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:52,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:52,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:52,598 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 00:41:52,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:52,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831092440] [2021-08-13 00:41:52,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831092440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:52,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:52,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:41:52,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285373992] [2021-08-13 00:41:52,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:41:52,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:52,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:41:52,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:41:52,601 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2021-08-13 00:41:52,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 207 transitions, 1013 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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 00:41:52,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:52,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2021-08-13 00:41:52,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:52,710 INFO L129 PetriNetUnfolder]: 145/458 cut-off events. [2021-08-13 00:41:52,711 INFO L130 PetriNetUnfolder]: For 163/295 co-relation queries the response was YES. [2021-08-13 00:41:52,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 458 events. 145/458 cut-off events. For 163/295 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2516 event pairs, 0 based on Foata normal form. 8/463 useless extension candidates. Maximal degree in co-relation 1122. Up to 116 conditions per place. [2021-08-13 00:41:52,714 INFO L132 encePairwiseOnDemand]: 79/85 looper letters, 11 selfloop transitions, 4 changer transitions 157/239 dead transitions. [2021-08-13 00:41:52,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 239 transitions, 1441 flow [2021-08-13 00:41:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 00:41:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 00:41:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 677 transitions. [2021-08-13 00:41:52,716 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8849673202614379 [2021-08-13 00:41:52,716 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 677 transitions. [2021-08-13 00:41:52,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 677 transitions. [2021-08-13 00:41:52,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:52,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 677 transitions. [2021-08-13 00:41:52,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.22222222222223) internal successors, (677), 9 states have internal predecessors, (677), 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 00:41:52,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 00:41:52,718 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 85.0) internal successors, (850), 10 states have internal predecessors, (850), 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 00:41:52,719 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 32 predicate places. [2021-08-13 00:41:52,719 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 239 transitions, 1441 flow [2021-08-13 00:41:52,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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 00:41:52,719 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:52,719 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 00:41:52,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 00:41:52,719 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:52,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1469088344, now seen corresponding path program 1 times [2021-08-13 00:41:52,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:52,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590353321] [2021-08-13 00:41:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:52,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:52,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:52,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:52,762 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:41:52,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:41:52,769 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:41:52,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:41:52,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:52,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:52,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:52,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:52,797 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 00:41:52,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:52,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590353321] [2021-08-13 00:41:52,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590353321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:52,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:52,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:41:52,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533455151] [2021-08-13 00:41:52,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:41:52,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:41:52,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:41:52,799 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-08-13 00:41:52,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 239 transitions, 1441 flow. Second operand has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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 00:41:52,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:52,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-08-13 00:41:52,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:53,005 INFO L129 PetriNetUnfolder]: 146/477 cut-off events. [2021-08-13 00:41:53,005 INFO L130 PetriNetUnfolder]: For 277/821 co-relation queries the response was YES. [2021-08-13 00:41:53,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 477 events. 146/477 cut-off events. For 277/821 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2801 event pairs, 5 based on Foata normal form. 21/494 useless extension candidates. Maximal degree in co-relation 1520. Up to 126 conditions per place. [2021-08-13 00:41:53,007 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 10 selfloop transitions, 4 changer transitions 196/264 dead transitions. [2021-08-13 00:41:53,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 264 transitions, 2015 flow [2021-08-13 00:41:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:41:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:41:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 922 transitions. [2021-08-13 00:41:53,019 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8343891402714932 [2021-08-13 00:41:53,019 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 922 transitions. [2021-08-13 00:41:53,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 922 transitions. [2021-08-13 00:41:53,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:53,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 922 transitions. [2021-08-13 00:41:53,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.92307692307692) internal successors, (922), 13 states have internal predecessors, (922), 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 00:41:53,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 00:41:53,022 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 00:41:53,022 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 44 predicate places. [2021-08-13 00:41:53,022 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 264 transitions, 2015 flow [2021-08-13 00:41:53,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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 00:41:53,022 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:53,023 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 00:41:53,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 00:41:53,023 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:53,023 INFO L82 PathProgramCache]: Analyzing trace with hash 960145878, now seen corresponding path program 1 times [2021-08-13 00:41:53,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:53,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057447516] [2021-08-13 00:41:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:53,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:53,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:53,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:53,095 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:41:53,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:41:53,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:53,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:53,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:53,138 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 00:41:53,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:53,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057447516] [2021-08-13 00:41:53,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057447516] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:53,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:53,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:41:53,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658332659] [2021-08-13 00:41:53,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:41:53,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:41:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:41:53,140 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-08-13 00:41:53,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 264 transitions, 2015 flow. Second operand has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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 00:41:53,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:53,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-08-13 00:41:53,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:53,462 INFO L129 PetriNetUnfolder]: 513/1272 cut-off events. [2021-08-13 00:41:53,462 INFO L130 PetriNetUnfolder]: For 1335/2906 co-relation queries the response was YES. [2021-08-13 00:41:53,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 1272 events. 513/1272 cut-off events. For 1335/2906 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9668 event pairs, 13 based on Foata normal form. 12/1279 useless extension candidates. Maximal degree in co-relation 4665. Up to 328 conditions per place. [2021-08-13 00:41:53,469 INFO L132 encePairwiseOnDemand]: 77/85 looper letters, 6 selfloop transitions, 4 changer transitions 405/473 dead transitions. [2021-08-13 00:41:53,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 473 transitions, 4757 flow [2021-08-13 00:41:53,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:41:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:41:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 956 transitions. [2021-08-13 00:41:53,471 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.865158371040724 [2021-08-13 00:41:53,471 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 956 transitions. [2021-08-13 00:41:53,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 956 transitions. [2021-08-13 00:41:53,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:53,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 956 transitions. [2021-08-13 00:41:53,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.53846153846153) internal successors, (956), 13 states have internal predecessors, (956), 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 00:41:53,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 00:41:53,478 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 00:41:53,478 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 56 predicate places. [2021-08-13 00:41:53,479 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 473 transitions, 4757 flow [2021-08-13 00:41:53,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 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 00:41:53,479 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:53,479 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 00:41:53,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 00:41:53,480 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:53,480 INFO L82 PathProgramCache]: Analyzing trace with hash -980385593, now seen corresponding path program 1 times [2021-08-13 00:41:53,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:53,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389046312] [2021-08-13 00:41:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:53,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:53,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:53,553 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:41:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:41:53,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:41:53,576 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:41:53,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:53,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:53,583 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 00:41:53,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:53,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389046312] [2021-08-13 00:41:53,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389046312] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:53,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:53,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:41:53,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934876138] [2021-08-13 00:41:53,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:41:53,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:53,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:41:53,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:41:53,586 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-08-13 00:41:53,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 473 transitions, 4757 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:41:53,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:53,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-08-13 00:41:53,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:53,927 INFO L129 PetriNetUnfolder]: 965/2348 cut-off events. [2021-08-13 00:41:53,927 INFO L130 PetriNetUnfolder]: For 1596/2191 co-relation queries the response was YES. [2021-08-13 00:41:53,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 2348 events. 965/2348 cut-off events. For 1596/2191 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 20441 event pairs, 47 based on Foata normal form. 16/2192 useless extension candidates. Maximal degree in co-relation 7189. Up to 526 conditions per place. [2021-08-13 00:41:53,939 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 10 selfloop transitions, 6 changer transitions 300/394 dead transitions. [2021-08-13 00:41:53,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 394 transitions, 3591 flow [2021-08-13 00:41:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 00:41:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 00:41:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 753 transitions. [2021-08-13 00:41:53,941 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8858823529411765 [2021-08-13 00:41:53,941 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 753 transitions. [2021-08-13 00:41:53,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 753 transitions. [2021-08-13 00:41:53,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:53,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 753 transitions. [2021-08-13 00:41:53,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.3) internal successors, (753), 10 states have internal predecessors, (753), 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 00:41:53,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 00:41:53,944 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 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 00:41:53,944 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 65 predicate places. [2021-08-13 00:41:53,944 INFO L482 AbstractCegarLoop]: Abstraction has has 144 places, 394 transitions, 3591 flow [2021-08-13 00:41:53,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:41:53,944 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:53,945 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 00:41:53,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 00:41:53,945 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:53,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:53,945 INFO L82 PathProgramCache]: Analyzing trace with hash -309387818, now seen corresponding path program 1 times [2021-08-13 00:41:53,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:53,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934517215] [2021-08-13 00:41:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:53,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:53,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:53,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:53,975 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:41:53,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:41:53,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:53,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:41:53,993 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:41:53,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:53,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:54,000 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 00:41:54,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:54,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934517215] [2021-08-13 00:41:54,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934517215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:54,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:54,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:41:54,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599973201] [2021-08-13 00:41:54,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:41:54,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:54,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:41:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:41:54,044 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-08-13 00:41:54,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 394 transitions, 3591 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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 00:41:54,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:54,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-08-13 00:41:54,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:54,330 INFO L129 PetriNetUnfolder]: 623/1561 cut-off events. [2021-08-13 00:41:54,330 INFO L130 PetriNetUnfolder]: For 644/1634 co-relation queries the response was YES. [2021-08-13 00:41:54,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 1561 events. 623/1561 cut-off events. For 644/1634 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13081 event pairs, 9 based on Foata normal form. 163/1596 useless extension candidates. Maximal degree in co-relation 4690. Up to 466 conditions per place. [2021-08-13 00:41:54,337 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 10 selfloop transitions, 9 changer transitions 167/244 dead transitions. [2021-08-13 00:41:54,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 244 transitions, 1831 flow [2021-08-13 00:41:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:41:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:41:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 980 transitions. [2021-08-13 00:41:54,339 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8868778280542986 [2021-08-13 00:41:54,339 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 980 transitions. [2021-08-13 00:41:54,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 980 transitions. [2021-08-13 00:41:54,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:54,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 980 transitions. [2021-08-13 00:41:54,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.38461538461539) internal successors, (980), 13 states have internal predecessors, (980), 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 00:41:54,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 00:41:54,343 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 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 00:41:54,343 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 71 predicate places. [2021-08-13 00:41:54,343 INFO L482 AbstractCegarLoop]: Abstraction has has 150 places, 244 transitions, 1831 flow [2021-08-13 00:41:54,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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 00:41:54,343 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:54,343 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] [2021-08-13 00:41:54,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 00:41:54,343 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:54,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1149032661, now seen corresponding path program 1 times [2021-08-13 00:41:54,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:54,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829953564] [2021-08-13 00:41:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:54,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:54,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:54,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:54,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:54,376 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:41:54,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:41:54,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:41:54,395 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:41:54,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:54,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:54,402 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 00:41:54,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:54,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829953564] [2021-08-13 00:41:54,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829953564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:54,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:54,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:41:54,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403970831] [2021-08-13 00:41:54,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:41:54,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:54,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:41:54,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:41:54,404 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 85 [2021-08-13 00:41:54,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 244 transitions, 1831 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:41:54,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:54,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 85 [2021-08-13 00:41:54,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:54,795 INFO L129 PetriNetUnfolder]: 548/1369 cut-off events. [2021-08-13 00:41:54,795 INFO L130 PetriNetUnfolder]: For 547/2186 co-relation queries the response was YES. [2021-08-13 00:41:54,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4757 conditions, 1369 events. 548/1369 cut-off events. For 547/2186 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 11597 event pairs, 0 based on Foata normal form. 216/1475 useless extension candidates. Maximal degree in co-relation 4695. Up to 441 conditions per place. [2021-08-13 00:41:54,803 INFO L132 encePairwiseOnDemand]: 75/85 looper letters, 4 selfloop transitions, 12 changer transitions 118/192 dead transitions. [2021-08-13 00:41:54,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 192 transitions, 1379 flow [2021-08-13 00:41:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 00:41:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 00:41:54,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1192 transitions. [2021-08-13 00:41:54,805 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8764705882352941 [2021-08-13 00:41:54,805 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1192 transitions. [2021-08-13 00:41:54,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1192 transitions. [2021-08-13 00:41:54,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:54,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1192 transitions. [2021-08-13 00:41:54,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 74.5) internal successors, (1192), 16 states have internal predecessors, (1192), 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 00:41:54,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 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 00:41:54,810 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 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 00:41:54,810 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 56 predicate places. [2021-08-13 00:41:54,810 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 192 transitions, 1379 flow [2021-08-13 00:41:54,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:41:54,810 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:41:54,811 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, 1] [2021-08-13 00:41:54,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 00:41:54,811 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:41:54,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:41:54,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1379396260, now seen corresponding path program 1 times [2021-08-13 00:41:54,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:41:54,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805391010] [2021-08-13 00:41:54,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:41:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:41:54,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:54,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:41:54,838 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:41:54,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:41:54,845 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:41:54,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:41:54,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:54,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:41:54,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:41:54,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:41:54,875 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 00:41:54,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:41:54,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805391010] [2021-08-13 00:41:54,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805391010] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:41:54,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:41:54,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:41:54,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316156341] [2021-08-13 00:41:54,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:41:54,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:41:54,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:41:54,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:41:54,877 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 85 [2021-08-13 00:41:54,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 192 transitions, 1379 flow. Second operand has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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 00:41:54,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:41:54,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 85 [2021-08-13 00:41:54,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:41:55,156 INFO L129 PetriNetUnfolder]: 943/2314 cut-off events. [2021-08-13 00:41:55,157 INFO L130 PetriNetUnfolder]: For 1086/1928 co-relation queries the response was YES. [2021-08-13 00:41:55,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8141 conditions, 2314 events. 943/2314 cut-off events. For 1086/1928 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 21739 event pairs, 0 based on Foata normal form. 18/2154 useless extension candidates. Maximal degree in co-relation 8073. Up to 755 conditions per place. [2021-08-13 00:41:55,168 INFO L132 encePairwiseOnDemand]: 74/85 looper letters, 0 selfloop transitions, 0 changer transitions 216/216 dead transitions. [2021-08-13 00:41:55,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 216 transitions, 1759 flow [2021-08-13 00:41:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 00:41:55,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 00:41:55,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 562 transitions. [2021-08-13 00:41:55,169 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8264705882352941 [2021-08-13 00:41:55,169 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 562 transitions. [2021-08-13 00:41:55,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 562 transitions. [2021-08-13 00:41:55,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:41:55,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 562 transitions. [2021-08-13 00:41:55,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.25) internal successors, (562), 8 states have internal predecessors, (562), 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 00:41:55,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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 00:41:55,171 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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 00:41:55,171 INFO L348 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2021-08-13 00:41:55,171 INFO L482 AbstractCegarLoop]: Abstraction has has 140 places, 216 transitions, 1759 flow [2021-08-13 00:41:55,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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 00:41:55,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown