/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 06:10:49,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 06:10:49,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 06:10:49,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 06:10:49,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 06:10:49,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 06:10:49,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 06:10:49,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 06:10:49,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 06:10:49,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 06:10:49,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 06:10:49,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 06:10:49,133 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 06:10:49,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 06:10:49,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 06:10:49,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 06:10:49,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 06:10:49,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 06:10:49,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 06:10:49,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 06:10:49,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 06:10:49,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 06:10:49,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 06:10:49,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 06:10:49,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 06:10:49,182 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 06:10:49,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 06:10:49,182 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 06:10:49,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 06:10:49,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 06:10:49,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 06:10:49,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 06:10:49,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 06:10:49,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 06:10:49,183 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 06:10:49,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 06:10:49,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 06:10:49,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 06:10:49,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 06:10:49,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 06:10:49,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 06:10:49,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 06:10:49,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:10:49,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 06:10:49,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 06:10:49,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 06:10:49,185 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 06:10:49,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 06:10:49,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 06:10:49,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 06:10:49,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 06:10:49,470 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 06:10:49,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2021-08-13 06:10:49,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14870497f/0df4347fdd864fe98b14be3be75a05ef/FLAG540c34b5f [2021-08-13 06:10:50,064 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 06:10:50,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.oepc.i [2021-08-13 06:10:50,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14870497f/0df4347fdd864fe98b14be3be75a05ef/FLAG540c34b5f [2021-08-13 06:10:50,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14870497f/0df4347fdd864fe98b14be3be75a05ef [2021-08-13 06:10:50,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 06:10:50,414 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 06:10:50,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 06:10:50,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 06:10:50,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 06:10:50,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632f948a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50, skipping insertion in model container [2021-08-13 06:10:50,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 06:10:50,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 06:10:50,577 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/safe021_tso.oepc.i[950,963] [2021-08-13 06:10:50,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:10:50,733 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 06:10:50,740 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/safe021_tso.oepc.i[950,963] [2021-08-13 06:10:50,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:10:50,847 INFO L208 MainTranslator]: Completed translation [2021-08-13 06:10:50,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50 WrapperNode [2021-08-13 06:10:50,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 06:10:50,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 06:10:50,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 06:10:50,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 06:10:50,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,861 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 06:10:50,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 06:10:50,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 06:10:50,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 06:10:50,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (1/1) ... [2021-08-13 06:10:50,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 06:10:50,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 06:10:50,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 06:10:50,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 06:10:50,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (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 06:10:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 06:10:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 06:10:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 06:10:50,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 06:10:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 06:10:50,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 06:10:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 06:10:50,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 06:10:50,979 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 06:10:50,980 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 06:10:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 06:10:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 06:10:50,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 06:10:50,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 06:10:50,984 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 06:10:51,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 06:10:51,354 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 06:10:51,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:10:51 BoogieIcfgContainer [2021-08-13 06:10:51,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 06:10:51,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 06:10:51,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 06:10:51,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 06:10:51,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 06:10:50" (1/3) ... [2021-08-13 06:10:51,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4168b062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:10:51, skipping insertion in model container [2021-08-13 06:10:51,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:10:50" (2/3) ... [2021-08-13 06:10:51,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4168b062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:10:51, skipping insertion in model container [2021-08-13 06:10:51,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:10:51" (3/3) ... [2021-08-13 06:10:51,360 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.oepc.i [2021-08-13 06:10:51,363 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 06:10:51,364 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 06:10:51,364 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 06:10:51,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,392 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,392 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,393 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,394 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,394 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,394 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,395 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,395 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,397 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,398 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,399 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,399 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,399 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,399 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,400 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,400 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,401 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,402 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,403 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,403 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,408 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,408 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,408 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,410 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,410 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,410 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,411 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:10:51,414 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 06:10:51,430 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 06:10:51,455 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 06:10:51,455 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 06:10:51,455 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 06:10:51,455 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 06:10:51,455 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 06:10:51,455 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 06:10:51,455 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 06:10:51,455 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 06:10:51,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 06:10:51,511 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-13 06:10:51,512 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:10:51,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 06:10:51,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 06:10:51,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-08-13 06:10:51,549 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-08-13 06:10:51,549 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:10:51,549 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:51,550 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:10:51,550 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1432389661, now seen corresponding path program 1 times [2021-08-13 06:10:51,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:51,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487553299] [2021-08-13 06:10:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:51,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:51,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:51,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:51,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:51,827 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:10:51,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:10:51,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:51,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:51,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:51,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:51,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:51,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:51,869 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 06:10:51,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:51,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487553299] [2021-08-13 06:10:51,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487553299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:51,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:51,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:10:51,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930936570] [2021-08-13 06:10:51,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:10:51,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:51,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:10:51,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:10:51,895 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 84 [2021-08-13 06:10:51,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 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 06:10:51,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:51,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 84 [2021-08-13 06:10:51,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:52,046 INFO L129 PetriNetUnfolder]: 24/139 cut-off events. [2021-08-13 06:10:52,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:10:52,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 139 events. 24/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 388 event pairs, 5 based on Foata normal form. 6/142 useless extension candidates. Maximal degree in co-relation 179. Up to 31 conditions per place. [2021-08-13 06:10:52,049 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 8 selfloop transitions, 3 changer transitions 19/89 dead transitions. [2021-08-13 06:10:52,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 247 flow [2021-08-13 06:10:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 06:10:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 06:10:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 673 transitions. [2021-08-13 06:10:52,064 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8902116402116402 [2021-08-13 06:10:52,065 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 673 transitions. [2021-08-13 06:10:52,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 673 transitions. [2021-08-13 06:10:52,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:52,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 673 transitions. [2021-08-13 06:10:52,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.77777777777777) internal successors, (673), 9 states have internal predecessors, (673), 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 06:10:52,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,082 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,082 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2021-08-13 06:10:52,083 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 247 flow [2021-08-13 06:10:52,083 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 06:10:52,083 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:52,083 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:10:52,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 06:10:52,083 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash -545670556, now seen corresponding path program 1 times [2021-08-13 06:10:52,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:52,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058213667] [2021-08-13 06:10:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:52,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:52,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:52,170 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:10:52,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:10:52,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:52,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:52,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:52,195 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 06:10:52,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:52,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058213667] [2021-08-13 06:10:52,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058213667] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:52,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:52,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:10:52,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273153169] [2021-08-13 06:10:52,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:10:52,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:52,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:10:52,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:10:52,198 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 84 [2021-08-13 06:10:52,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:52,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 84 [2021-08-13 06:10:52,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:52,285 INFO L129 PetriNetUnfolder]: 80/295 cut-off events. [2021-08-13 06:10:52,286 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-08-13 06:10:52,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 295 events. 80/295 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1566 event pairs, 12 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 520. Up to 66 conditions per place. [2021-08-13 06:10:52,288 INFO L132 encePairwiseOnDemand]: 78/84 looper letters, 6 selfloop transitions, 2 changer transitions 42/112 dead transitions. [2021-08-13 06:10:52,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 112 transitions, 409 flow [2021-08-13 06:10:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 06:10:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 06:10:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 668 transitions. [2021-08-13 06:10:52,289 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8835978835978836 [2021-08-13 06:10:52,289 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 668 transitions. [2021-08-13 06:10:52,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 668 transitions. [2021-08-13 06:10:52,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:52,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 668 transitions. [2021-08-13 06:10:52,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.22222222222223) internal successors, (668), 9 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,292 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,293 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 16 predicate places. [2021-08-13 06:10:52,293 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 409 flow [2021-08-13 06:10:52,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,293 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:52,293 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 06:10:52,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 06:10:52,294 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:52,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:52,294 INFO L82 PathProgramCache]: Analyzing trace with hash -210120347, now seen corresponding path program 1 times [2021-08-13 06:10:52,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:52,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645528816] [2021-08-13 06:10:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:52,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:52,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:52,334 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 06:10:52,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 06:10:52,341 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:10:52,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:10:52,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:52,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:52,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:52,370 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 06:10:52,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:52,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645528816] [2021-08-13 06:10:52,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645528816] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:52,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:52,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:10:52,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882861545] [2021-08-13 06:10:52,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:10:52,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:10:52,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:10:52,372 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 06:10:52,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 409 flow. Second operand has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:52,373 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 06:10:52,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:52,714 INFO L129 PetriNetUnfolder]: 597/1545 cut-off events. [2021-08-13 06:10:52,714 INFO L130 PetriNetUnfolder]: For 431/790 co-relation queries the response was YES. [2021-08-13 06:10:52,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3724 conditions, 1545 events. 597/1545 cut-off events. For 431/790 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12224 event pairs, 15 based on Foata normal form. 20/1550 useless extension candidates. Maximal degree in co-relation 3684. Up to 327 conditions per place. [2021-08-13 06:10:52,721 INFO L132 encePairwiseOnDemand]: 71/84 looper letters, 28 selfloop transitions, 15 changer transitions 240/336 dead transitions. [2021-08-13 06:10:52,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 336 transitions, 2069 flow [2021-08-13 06:10:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 06:10:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 06:10:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1210 transitions. [2021-08-13 06:10:52,723 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8473389355742297 [2021-08-13 06:10:52,723 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1210 transitions. [2021-08-13 06:10:52,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1210 transitions. [2021-08-13 06:10:52,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:52,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1210 transitions. [2021-08-13 06:10:52,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 71.17647058823529) internal successors, (1210), 17 states have internal predecessors, (1210), 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 06:10:52,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,729 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,729 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 32 predicate places. [2021-08-13 06:10:52,729 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 336 transitions, 2069 flow [2021-08-13 06:10:52,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.71428571428571) internal successors, (467), 7 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:52,729 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:52,729 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 06:10:52,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 06:10:52,729 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:52,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:52,730 INFO L82 PathProgramCache]: Analyzing trace with hash 308071329, now seen corresponding path program 2 times [2021-08-13 06:10:52,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:52,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280012352] [2021-08-13 06:10:52,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:52,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:52,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:52,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:52,769 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:10:52,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:10:52,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:52,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:52,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:52,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:52,798 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 06:10:52,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:52,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280012352] [2021-08-13 06:10:52,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280012352] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:52,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:52,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:10:52,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097775474] [2021-08-13 06:10:52,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:10:52,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:52,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:10:52,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:10:52,800 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:10:52,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 336 transitions, 2069 flow. Second operand has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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 06:10:52,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:52,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:10:52,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:53,277 INFO L129 PetriNetUnfolder]: 625/1702 cut-off events. [2021-08-13 06:10:53,277 INFO L130 PetriNetUnfolder]: For 1015/2052 co-relation queries the response was YES. [2021-08-13 06:10:53,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4844 conditions, 1702 events. 625/1702 cut-off events. For 1015/2052 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 14238 event pairs, 21 based on Foata normal form. 38/1724 useless extension candidates. Maximal degree in co-relation 4800. Up to 382 conditions per place. [2021-08-13 06:10:53,298 INFO L132 encePairwiseOnDemand]: 76/84 looper letters, 10 selfloop transitions, 6 changer transitions 291/369 dead transitions. [2021-08-13 06:10:53,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 369 transitions, 2759 flow [2021-08-13 06:10:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:10:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:10:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 943 transitions. [2021-08-13 06:10:53,300 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8635531135531136 [2021-08-13 06:10:53,300 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 943 transitions. [2021-08-13 06:10:53,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 943 transitions. [2021-08-13 06:10:53,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:53,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 943 transitions. [2021-08-13 06:10:53,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.53846153846153) internal successors, (943), 13 states have internal predecessors, (943), 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 06:10:53,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,304 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,304 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2021-08-13 06:10:53,304 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 369 transitions, 2759 flow [2021-08-13 06:10:53,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.28571428571429) internal successors, (499), 7 states have internal predecessors, (499), 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 06:10:53,305 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:53,305 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 06:10:53,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 06:10:53,305 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:53,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash 413056235, now seen corresponding path program 1 times [2021-08-13 06:10:53,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:53,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098849139] [2021-08-13 06:10:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:53,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:53,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:53,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:53,343 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:10:53,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:10:53,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:10:53,362 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:10:53,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:53,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:53,369 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 06:10:53,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:53,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098849139] [2021-08-13 06:10:53,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098849139] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:53,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:53,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 06:10:53,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473940916] [2021-08-13 06:10:53,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 06:10:53,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:53,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 06:10:53,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 06:10:53,372 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:10:53,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 369 transitions, 2759 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:53,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:10:53,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:53,836 INFO L129 PetriNetUnfolder]: 1081/2881 cut-off events. [2021-08-13 06:10:53,837 INFO L130 PetriNetUnfolder]: For 1081/1180 co-relation queries the response was YES. [2021-08-13 06:10:53,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7137 conditions, 2881 events. 1081/2881 cut-off events. For 1081/1180 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 26707 event pairs, 64 based on Foata normal form. 11/2674 useless extension candidates. Maximal degree in co-relation 7090. Up to 661 conditions per place. [2021-08-13 06:10:53,851 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 21 selfloop transitions, 15 changer transitions 138/298 dead transitions. [2021-08-13 06:10:53,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 298 transitions, 2041 flow [2021-08-13 06:10:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 06:10:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 06:10:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-08-13 06:10:53,853 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-08-13 06:10:53,853 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-08-13 06:10:53,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-08-13 06:10:53,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:53,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-08-13 06:10:53,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,858 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,858 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 53 predicate places. [2021-08-13 06:10:53,858 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 298 transitions, 2041 flow [2021-08-13 06:10:53,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,859 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:53,859 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 06:10:53,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 06:10:53,859 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:53,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2021429414, now seen corresponding path program 1 times [2021-08-13 06:10:53,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:53,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434331646] [2021-08-13 06:10:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:53,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:53,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:53,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:53,925 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:10:53,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:10:53,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:10:53,943 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:10:53,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:53,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:53,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 06:10:53,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:53,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434331646] [2021-08-13 06:10:53,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434331646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:53,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:53,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:10:53,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787902314] [2021-08-13 06:10:53,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:10:53,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:53,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:10:53,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:10:53,953 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:10:53,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 298 transitions, 2041 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:53,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:53,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:10:53,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:54,298 INFO L129 PetriNetUnfolder]: 720/1999 cut-off events. [2021-08-13 06:10:54,299 INFO L130 PetriNetUnfolder]: For 462/1438 co-relation queries the response was YES. [2021-08-13 06:10:54,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 1999 events. 720/1999 cut-off events. For 462/1438 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 18089 event pairs, 9 based on Foata normal form. 193/2034 useless extension candidates. Maximal degree in co-relation 5407. Up to 556 conditions per place. [2021-08-13 06:10:54,308 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 22 selfloop transitions, 36 changer transitions 107/233 dead transitions. [2021-08-13 06:10:54,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 233 transitions, 1463 flow [2021-08-13 06:10:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:10:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:10:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2021-08-13 06:10:54,310 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8855311355311355 [2021-08-13 06:10:54,310 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2021-08-13 06:10:54,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2021-08-13 06:10:54,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:54,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2021-08-13 06:10:54,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,314 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,314 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 59 predicate places. [2021-08-13 06:10:54,314 INFO L482 AbstractCegarLoop]: Abstraction has has 137 places, 233 transitions, 1463 flow [2021-08-13 06:10:54,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,315 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:54,315 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:10:54,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 06:10:54,315 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:54,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:54,315 INFO L82 PathProgramCache]: Analyzing trace with hash 217962049, now seen corresponding path program 1 times [2021-08-13 06:10:54,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:54,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201488063] [2021-08-13 06:10:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:54,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:54,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:54,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:54,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:54,390 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 06:10:54,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 06:10:54,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 06:10:54,410 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 06:10:54,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:54,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:54,419 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 06:10:54,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:54,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201488063] [2021-08-13 06:10:54,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201488063] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:54,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:54,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 06:10:54,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244133310] [2021-08-13 06:10:54,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 06:10:54,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:54,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 06:10:54,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 06:10:54,422 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 06:10:54,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 233 transitions, 1463 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:54,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 06:10:54,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:54,768 INFO L129 PetriNetUnfolder]: 648/1760 cut-off events. [2021-08-13 06:10:54,768 INFO L130 PetriNetUnfolder]: For 512/2012 co-relation queries the response was YES. [2021-08-13 06:10:54,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5797 conditions, 1760 events. 648/1760 cut-off events. For 512/2012 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 16114 event pairs, 1 based on Foata normal form. 236/1858 useless extension candidates. Maximal degree in co-relation 5744. Up to 518 conditions per place. [2021-08-13 06:10:54,781 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 19 selfloop transitions, 40 changer transitions 71/194 dead transitions. [2021-08-13 06:10:54,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 194 transitions, 1297 flow [2021-08-13 06:10:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 06:10:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 06:10:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1176 transitions. [2021-08-13 06:10:54,784 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 06:10:54,784 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1176 transitions. [2021-08-13 06:10:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1176 transitions. [2021-08-13 06:10:54,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:54,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1176 transitions. [2021-08-13 06:10:54,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.5) internal successors, (1176), 16 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,789 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,789 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 53 predicate places. [2021-08-13 06:10:54,790 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 194 transitions, 1297 flow [2021-08-13 06:10:54,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:54,790 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:10:54,790 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 06:10:54,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 06:10:54,790 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:10:54,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:10:54,791 INFO L82 PathProgramCache]: Analyzing trace with hash 970767863, now seen corresponding path program 1 times [2021-08-13 06:10:54,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:10:54,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12142569] [2021-08-13 06:10:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:10:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:10:54,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:54,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:10:54,848 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 06:10:54,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 06:10:54,856 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:10:54,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:10:54,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:54,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:10:54,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:10:54,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:10:54,884 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 06:10:54,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:10:54,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12142569] [2021-08-13 06:10:54,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12142569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:10:54,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:10:54,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:10:54,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131463889] [2021-08-13 06:10:54,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:10:54,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:10:54,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:10:54,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:10:54,887 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 06:10:54,887 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 194 transitions, 1297 flow. Second operand has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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 06:10:54,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:10:54,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 06:10:54,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:10:55,168 INFO L129 PetriNetUnfolder]: 865/2271 cut-off events. [2021-08-13 06:10:55,168 INFO L130 PetriNetUnfolder]: For 875/1696 co-relation queries the response was YES. [2021-08-13 06:10:55,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7790 conditions, 2271 events. 865/2271 cut-off events. For 875/1696 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 21831 event pairs, 0 based on Foata normal form. 13/2083 useless extension candidates. Maximal degree in co-relation 7731. Up to 687 conditions per place. [2021-08-13 06:10:55,180 INFO L132 encePairwiseOnDemand]: 72/84 looper letters, 0 selfloop transitions, 0 changer transitions 216/216 dead transitions. [2021-08-13 06:10:55,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 216 transitions, 1563 flow [2021-08-13 06:10:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 06:10:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 06:10:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 549 transitions. [2021-08-13 06:10:55,181 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8169642857142857 [2021-08-13 06:10:55,182 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 549 transitions. [2021-08-13 06:10:55,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 549 transitions. [2021-08-13 06:10:55,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:10:55,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 549 transitions. [2021-08-13 06:10:55,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 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 06:10:55,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:55,185 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:10:55,185 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 58 predicate places. [2021-08-13 06:10:55,185 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 216 transitions, 1563 flow [2021-08-13 06:10:55,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 67.14285714285714) internal successors, (470), 7 states have internal predecessors, (470), 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 06:10:55,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown