/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 11:05:57,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 11:05:57,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 11:05:57,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 11:05:57,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 11:05:57,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 11:05:57,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 11:05:57,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 11:05:57,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 11:05:57,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 11:05:57,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 11:05:57,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 11:05:57,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 11:05:57,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 11:05:57,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 11:05:57,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 11:05:57,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 11:05:57,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 11:05:57,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 11:05:57,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 11:05:57,191 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-VariableLbe.epf [2021-03-24 11:05:57,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 11:05:57,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 11:05:57,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 11:05:57,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 11:05:57,232 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 11:05:57,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 11:05:57,232 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 11:05:57,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 11:05:57,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 11:05:57,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 11:05:57,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 11:05:57,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 11:05:57,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 11:05:57,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 11:05:57,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 11:05:57,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 11:05:57,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 11:05:57,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 11:05:57,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 11:05:57,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 11:05:57,496 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 11:05:57,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-03-24 11:05:57,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df62331e6/a84326061e7e46df8257e22acde14076/FLAGb912a84c8 [2021-03-24 11:05:57,940 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 11:05:57,941 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i [2021-03-24 11:05:57,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df62331e6/a84326061e7e46df8257e22acde14076/FLAGb912a84c8 [2021-03-24 11:05:58,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df62331e6/a84326061e7e46df8257e22acde14076 [2021-03-24 11:05:58,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 11:05:58,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 11:05:58,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 11:05:58,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 11:05:58,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 11:05:58,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bcc2eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58, skipping insertion in model container [2021-03-24 11:05:58,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 11:05:58,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 11:05:58,510 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i[949,962] [2021-03-24 11:05:58,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:05:58,656 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 11:05:58,672 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.opt.i[949,962] [2021-03-24 11:05:58,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 11:05:58,752 INFO L208 MainTranslator]: Completed translation [2021-03-24 11:05:58,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58 WrapperNode [2021-03-24 11:05:58,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 11:05:58,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 11:05:58,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 11:05:58,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 11:05:58,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 11:05:58,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 11:05:58,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 11:05:58,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 11:05:58,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (1/1) ... [2021-03-24 11:05:58,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 11:05:58,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 11:05:58,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 11:05:58,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 11:05:58,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (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 [2021-03-24 11:05:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 11:05:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 11:05:58,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 11:05:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 11:05:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 11:05:58,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 11:05:58,894 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 11:05:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 11:05:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 11:05:58,895 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 11:05:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 11:05:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 11:05:58,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 11:05:58,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 11:05:58,897 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 11:05:59,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 11:05:59,232 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-24 11:05:59,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:05:59 BoogieIcfgContainer [2021-03-24 11:05:59,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 11:05:59,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 11:05:59,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 11:05:59,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 11:05:59,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 11:05:58" (1/3) ... [2021-03-24 11:05:59,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c00493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:05:59, skipping insertion in model container [2021-03-24 11:05:59,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 11:05:58" (2/3) ... [2021-03-24 11:05:59,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c00493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 11:05:59, skipping insertion in model container [2021-03-24 11:05:59,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 11:05:59" (3/3) ... [2021-03-24 11:05:59,238 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.opt.i [2021-03-24 11:05:59,242 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 11:05:59,245 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 11:05:59,246 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 11:05:59,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,262 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,262 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,263 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,263 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,264 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,265 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,266 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,266 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,267 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,268 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,271 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,271 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,272 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,272 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 11:05:59,273 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 11:05:59,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 11:05:59,303 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 11:05:59,303 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 11:05:59,303 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 11:05:59,303 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 11:05:59,303 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 11:05:59,303 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 11:05:59,303 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 11:05:59,303 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 11:05:59,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:05:59,332 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-24 11:05:59,332 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:05:59,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-24 11:05:59,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-24 11:05:59,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:59,338 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 11:05:59,344 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:59,346 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:59,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-24 11:05:59,356 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-24 11:05:59,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:05:59,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-24 11:05:59,358 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-24 11:06:00,595 INFO L154 LiptonReduction]: Checked pairs total: 1010 [2021-03-24 11:06:00,595 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-24 11:06:00,597 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1260 [2021-03-24 11:06:00,602 INFO L129 PetriNetUnfolder]: 0/21 cut-off events. [2021-03-24 11:06:00,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:00,603 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:00,603 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:00,603 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:00,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1013680624, now seen corresponding path program 1 times [2021-03-24 11:06:00,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:00,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437457326] [2021-03-24 11:06:00,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:00,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:00,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:00,752 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:06:00,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:06:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:00,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437457326] [2021-03-24 11:06:00,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:00,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 11:06:00,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343233270] [2021-03-24 11:06:00,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:00,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:00,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:00,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:00,776 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 11:06:00,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-24 11:06:00,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:00,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 11:06:00,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:00,806 INFO L129 PetriNetUnfolder]: 44/126 cut-off events. [2021-03-24 11:06:00,806 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 11:06:00,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 126 events. 44/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 505 event pairs, 8 based on Foata normal form. 8/126 useless extension candidates. Maximal degree in co-relation 214. Up to 55 conditions per place. [2021-03-24 11:06:00,808 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 9 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2021-03-24 11:06:00,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 97 flow [2021-03-24 11:06:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:06:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:06:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2021-03-24 11:06:00,817 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8163716814159292 [2021-03-24 11:06:00,817 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 369 transitions. [2021-03-24 11:06:00,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 369 transitions. [2021-03-24 11:06:00,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:00,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 369 transitions. [2021-03-24 11:06:00,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.25) internal successors, (369), 4 states have internal predecessors, (369), 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) [2021-03-24 11:06:00,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:00,826 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:00,827 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 4 states and 369 transitions. [2021-03-24 11:06:00,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 97 flow [2021-03-24 11:06:00,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 11:06:00,831 INFO L241 Difference]: Finished difference. Result has 35 places, 26 transitions, 94 flow [2021-03-24 11:06:00,832 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-03-24 11:06:00,833 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2021-03-24 11:06:00,833 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 94 flow [2021-03-24 11:06:00,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 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) [2021-03-24 11:06:00,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:00,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:00,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 11:06:00,833 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:00,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:00,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1359328769, now seen corresponding path program 1 times [2021-03-24 11:06:00,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:00,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314074979] [2021-03-24 11:06:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:00,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:00,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:00,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:00,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:00,884 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:06:00,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:06:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:00,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314074979] [2021-03-24 11:06:00,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:00,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:06:00,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516275451] [2021-03-24 11:06:00,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:00,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:00,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:00,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:00,894 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 11:06:00,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-03-24 11:06:00,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:00,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 11:06:00,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:00,917 INFO L129 PetriNetUnfolder]: 32/105 cut-off events. [2021-03-24 11:06:00,917 INFO L130 PetriNetUnfolder]: For 67/188 co-relation queries the response was YES. [2021-03-24 11:06:00,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 105 events. 32/105 cut-off events. For 67/188 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 390 event pairs, 4 based on Foata normal form. 3/105 useless extension candidates. Maximal degree in co-relation 285. Up to 43 conditions per place. [2021-03-24 11:06:00,918 INFO L132 encePairwiseOnDemand]: 105/113 looper letters, 10 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2021-03-24 11:06:00,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 174 flow [2021-03-24 11:06:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:06:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:06:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2021-03-24 11:06:00,921 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8141592920353983 [2021-03-24 11:06:00,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2021-03-24 11:06:00,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2021-03-24 11:06:00,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:00,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2021-03-24 11:06:00,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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) [2021-03-24 11:06:00,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:00,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:00,923 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 94 flow. Second operand 4 states and 368 transitions. [2021-03-24 11:06:00,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 174 flow [2021-03-24 11:06:00,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:06:00,929 INFO L241 Difference]: Finished difference. Result has 40 places, 31 transitions, 169 flow [2021-03-24 11:06:00,929 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2021-03-24 11:06:00,930 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 8 predicate places. [2021-03-24 11:06:00,930 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 169 flow [2021-03-24 11:06:00,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2021-03-24 11:06:00,930 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:00,930 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:00,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 11:06:00,930 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:00,931 INFO L82 PathProgramCache]: Analyzing trace with hash 569037341, now seen corresponding path program 1 times [2021-03-24 11:06:00,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:00,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041981420] [2021-03-24 11:06:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:00,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:00,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:00,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:00,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:00,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:00,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:00,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041981420] [2021-03-24 11:06:00,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:00,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:06:00,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448604397] [2021-03-24 11:06:00,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:00,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:00,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:00,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:00,989 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2021-03-24 11:06:00,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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) [2021-03-24 11:06:00,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:00,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2021-03-24 11:06:00,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:01,016 INFO L129 PetriNetUnfolder]: 24/107 cut-off events. [2021-03-24 11:06:01,016 INFO L130 PetriNetUnfolder]: For 229/426 co-relation queries the response was YES. [2021-03-24 11:06:01,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 107 events. 24/107 cut-off events. For 229/426 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 473 event pairs, 4 based on Foata normal form. 11/116 useless extension candidates. Maximal degree in co-relation 351. Up to 36 conditions per place. [2021-03-24 11:06:01,017 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 11 selfloop transitions, 5 changer transitions 5/38 dead transitions. [2021-03-24 11:06:01,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 272 flow [2021-03-24 11:06:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 11:06:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 11:06:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2021-03-24 11:06:01,019 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8407079646017699 [2021-03-24 11:06:01,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2021-03-24 11:06:01,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2021-03-24 11:06:01,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:01,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2021-03-24 11:06:01,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 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) [2021-03-24 11:06:01,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:06:01,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 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) [2021-03-24 11:06:01,022 INFO L185 Difference]: Start difference. First operand has 40 places, 31 transitions, 169 flow. Second operand 5 states and 475 transitions. [2021-03-24 11:06:01,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 272 flow [2021-03-24 11:06:01,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 11:06:01,024 INFO L241 Difference]: Finished difference. Result has 46 places, 31 transitions, 189 flow [2021-03-24 11:06:01,025 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2021-03-24 11:06:01,025 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2021-03-24 11:06:01,025 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 189 flow [2021-03-24 11:06:01,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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) [2021-03-24 11:06:01,025 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:01,025 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:01,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 11:06:01,026 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash 939353499, now seen corresponding path program 1 times [2021-03-24 11:06:01,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:01,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851769411] [2021-03-24 11:06:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:01,067 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:06:01,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:06:01,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:01,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851769411] [2021-03-24 11:06:01,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:01,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:06:01,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178096167] [2021-03-24 11:06:01,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:06:01,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:01,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:06:01,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:06:01,080 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 11:06:01,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2021-03-24 11:06:01,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:01,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 11:06:01,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:01,146 INFO L129 PetriNetUnfolder]: 196/439 cut-off events. [2021-03-24 11:06:01,146 INFO L130 PetriNetUnfolder]: For 347/355 co-relation queries the response was YES. [2021-03-24 11:06:01,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1077 conditions, 439 events. 196/439 cut-off events. For 347/355 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 2792 event pairs, 36 based on Foata normal form. 34/432 useless extension candidates. Maximal degree in co-relation 1053. Up to 195 conditions per place. [2021-03-24 11:06:01,150 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 12 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2021-03-24 11:06:01,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 263 flow [2021-03-24 11:06:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 11:06:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 11:06:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2021-03-24 11:06:01,152 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2021-03-24 11:06:01,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 516 transitions. [2021-03-24 11:06:01,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 516 transitions. [2021-03-24 11:06:01,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:01,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 516 transitions. [2021-03-24 11:06:01,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 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) [2021-03-24 11:06:01,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 11:06:01,155 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 11:06:01,155 INFO L185 Difference]: Start difference. First operand has 46 places, 31 transitions, 189 flow. Second operand 6 states and 516 transitions. [2021-03-24 11:06:01,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 263 flow [2021-03-24 11:06:01,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 249 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 11:06:01,158 INFO L241 Difference]: Finished difference. Result has 49 places, 40 transitions, 251 flow [2021-03-24 11:06:01,158 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=251, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2021-03-24 11:06:01,158 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2021-03-24 11:06:01,158 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 251 flow [2021-03-24 11:06:01,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 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) [2021-03-24 11:06:01,159 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:01,159 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:01,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 11:06:01,159 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:01,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:01,159 INFO L82 PathProgramCache]: Analyzing trace with hash 193655682, now seen corresponding path program 1 times [2021-03-24 11:06:01,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:01,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745421466] [2021-03-24 11:06:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:01,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,207 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:06:01,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:06:01,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:01,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745421466] [2021-03-24 11:06:01,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:01,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 11:06:01,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789453693] [2021-03-24 11:06:01,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 11:06:01,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:01,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 11:06:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-24 11:06:01,226 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 11:06:01,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-03-24 11:06:01,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:01,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 11:06:01,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:01,337 INFO L129 PetriNetUnfolder]: 160/401 cut-off events. [2021-03-24 11:06:01,337 INFO L130 PetriNetUnfolder]: For 785/1214 co-relation queries the response was YES. [2021-03-24 11:06:01,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 401 events. 160/401 cut-off events. For 785/1214 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 2588 event pairs, 4 based on Foata normal form. 104/462 useless extension candidates. Maximal degree in co-relation 1542. Up to 206 conditions per place. [2021-03-24 11:06:01,341 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 10 selfloop transitions, 19 changer transitions 3/56 dead transitions. [2021-03-24 11:06:01,341 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 406 flow [2021-03-24 11:06:01,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 11:06:01,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 11:06:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 688 transitions. [2021-03-24 11:06:01,343 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7610619469026548 [2021-03-24 11:06:01,343 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 688 transitions. [2021-03-24 11:06:01,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 688 transitions. [2021-03-24 11:06:01,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:01,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 688 transitions. [2021-03-24 11:06:01,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.0) internal successors, (688), 8 states have internal predecessors, (688), 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) [2021-03-24 11:06:01,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2021-03-24 11:06:01,346 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2021-03-24 11:06:01,346 INFO L185 Difference]: Start difference. First operand has 49 places, 40 transitions, 251 flow. Second operand 8 states and 688 transitions. [2021-03-24 11:06:01,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 406 flow [2021-03-24 11:06:01,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 11:06:01,351 INFO L241 Difference]: Finished difference. Result has 60 places, 50 transitions, 391 flow [2021-03-24 11:06:01,351 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=391, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2021-03-24 11:06:01,352 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2021-03-24 11:06:01,352 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 391 flow [2021-03-24 11:06:01,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 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) [2021-03-24 11:06:01,352 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:01,352 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 11:06:01,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 11:06:01,353 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:01,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:01,354 INFO L82 PathProgramCache]: Analyzing trace with hash -348901400, now seen corresponding path program 1 times [2021-03-24 11:06:01,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:01,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170051817] [2021-03-24 11:06:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:01,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,426 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 11:06:01,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 11:06:01,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:01,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170051817] [2021-03-24 11:06:01,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:01,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 11:06:01,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278552897] [2021-03-24 11:06:01,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 11:06:01,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:01,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 11:06:01,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 11:06:01,449 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2021-03-24 11:06:01,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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) [2021-03-24 11:06:01,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:01,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2021-03-24 11:06:01,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:01,571 INFO L129 PetriNetUnfolder]: 150/376 cut-off events. [2021-03-24 11:06:01,571 INFO L130 PetriNetUnfolder]: For 2101/2971 co-relation queries the response was YES. [2021-03-24 11:06:01,573 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 376 events. 150/376 cut-off events. For 2101/2971 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 2428 event pairs, 3 based on Foata normal form. 127/461 useless extension candidates. Maximal degree in co-relation 2001. Up to 198 conditions per place. [2021-03-24 11:06:01,575 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 5 selfloop transitions, 23 changer transitions 6/58 dead transitions. [2021-03-24 11:06:01,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 527 flow [2021-03-24 11:06:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 11:06:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 11:06:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 851 transitions. [2021-03-24 11:06:01,577 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7530973451327434 [2021-03-24 11:06:01,577 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 851 transitions. [2021-03-24 11:06:01,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 851 transitions. [2021-03-24 11:06:01,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:01,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 851 transitions. [2021-03-24 11:06:01,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 85.1) internal successors, (851), 10 states have internal predecessors, (851), 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) [2021-03-24 11:06:01,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 113.0) internal successors, (1243), 11 states have internal predecessors, (1243), 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) [2021-03-24 11:06:01,584 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 113.0) internal successors, (1243), 11 states have internal predecessors, (1243), 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) [2021-03-24 11:06:01,584 INFO L185 Difference]: Start difference. First operand has 60 places, 50 transitions, 391 flow. Second operand 10 states and 851 transitions. [2021-03-24 11:06:01,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 527 flow [2021-03-24 11:06:01,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 476 flow, removed 18 selfloop flow, removed 4 redundant places. [2021-03-24 11:06:01,595 INFO L241 Difference]: Finished difference. Result has 69 places, 52 transitions, 431 flow [2021-03-24 11:06:01,596 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=431, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2021-03-24 11:06:01,596 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2021-03-24 11:06:01,596 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 431 flow [2021-03-24 11:06:01,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 82.85714285714286) internal successors, (580), 7 states have internal predecessors, (580), 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) [2021-03-24 11:06:01,596 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:01,596 INFO L263 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] [2021-03-24 11:06:01,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 11:06:01,596 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:01,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:01,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1888123837, now seen corresponding path program 1 times [2021-03-24 11:06:01,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:01,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042743158] [2021-03-24 11:06:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:01,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:01,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,644 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:06:01,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:06:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:01,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042743158] [2021-03-24 11:06:01,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:01,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:06:01,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633321589] [2021-03-24 11:06:01,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:06:01,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:06:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:06:01,655 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 11:06:01,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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) [2021-03-24 11:06:01,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:01,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 11:06:01,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:01,716 INFO L129 PetriNetUnfolder]: 171/448 cut-off events. [2021-03-24 11:06:01,716 INFO L130 PetriNetUnfolder]: For 2213/2395 co-relation queries the response was YES. [2021-03-24 11:06:01,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 448 events. 171/448 cut-off events. For 2213/2395 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 3150 event pairs, 0 based on Foata normal form. 5/399 useless extension candidates. Maximal degree in co-relation 2162. Up to 173 conditions per place. [2021-03-24 11:06:01,719 INFO L132 encePairwiseOnDemand]: 106/113 looper letters, 6 selfloop transitions, 16 changer transitions 5/62 dead transitions. [2021-03-24 11:06:01,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 564 flow [2021-03-24 11:06:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 11:06:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 11:06:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 547 transitions. [2021-03-24 11:06:01,721 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8067846607669616 [2021-03-24 11:06:01,721 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 547 transitions. [2021-03-24 11:06:01,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 547 transitions. [2021-03-24 11:06:01,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:01,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 547 transitions. [2021-03-24 11:06:01,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.16666666666667) internal successors, (547), 6 states have internal predecessors, (547), 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) [2021-03-24 11:06:01,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 11:06:01,723 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2021-03-24 11:06:01,723 INFO L185 Difference]: Start difference. First operand has 69 places, 52 transitions, 431 flow. Second operand 6 states and 547 transitions. [2021-03-24 11:06:01,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 564 flow [2021-03-24 11:06:01,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 491 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-03-24 11:06:01,731 INFO L241 Difference]: Finished difference. Result has 67 places, 57 transitions, 458 flow [2021-03-24 11:06:01,731 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=458, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2021-03-24 11:06:01,731 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2021-03-24 11:06:01,732 INFO L480 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 458 flow [2021-03-24 11:06:01,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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) [2021-03-24 11:06:01,732 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:01,732 INFO L263 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] [2021-03-24 11:06:01,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 11:06:01,732 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:01,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:01,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1705000847, now seen corresponding path program 2 times [2021-03-24 11:06:01,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:01,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405218438] [2021-03-24 11:06:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:01,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:01,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:01,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405218438] [2021-03-24 11:06:01,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:01,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 11:06:01,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926019262] [2021-03-24 11:06:01,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 11:06:01,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 11:06:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 11:06:01,785 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 113 [2021-03-24 11:06:01,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2021-03-24 11:06:01,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:01,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 113 [2021-03-24 11:06:01,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:01,910 INFO L129 PetriNetUnfolder]: 267/680 cut-off events. [2021-03-24 11:06:01,910 INFO L130 PetriNetUnfolder]: For 1560/1615 co-relation queries the response was YES. [2021-03-24 11:06:01,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 680 events. 267/680 cut-off events. For 1560/1615 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 5233 event pairs, 1 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 2659. Up to 175 conditions per place. [2021-03-24 11:06:01,913 INFO L132 encePairwiseOnDemand]: 110/113 looper letters, 4 selfloop transitions, 1 changer transitions 31/59 dead transitions. [2021-03-24 11:06:01,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 494 flow [2021-03-24 11:06:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:06:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:06:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 387 transitions. [2021-03-24 11:06:01,914 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8561946902654868 [2021-03-24 11:06:01,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 387 transitions. [2021-03-24 11:06:01,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 387 transitions. [2021-03-24 11:06:01,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:01,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 387 transitions. [2021-03-24 11:06:01,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 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) [2021-03-24 11:06:01,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:01,916 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:01,916 INFO L185 Difference]: Start difference. First operand has 67 places, 57 transitions, 458 flow. Second operand 4 states and 387 transitions. [2021-03-24 11:06:01,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 494 flow [2021-03-24 11:06:01,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 480 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 11:06:01,923 INFO L241 Difference]: Finished difference. Result has 70 places, 28 transitions, 183 flow [2021-03-24 11:06:01,924 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=70, PETRI_TRANSITIONS=28} [2021-03-24 11:06:01,924 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2021-03-24 11:06:01,924 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 28 transitions, 183 flow [2021-03-24 11:06:01,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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) [2021-03-24 11:06:01,924 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 11:06:01,924 INFO L263 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] [2021-03-24 11:06:01,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 11:06:01,924 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 11:06:01,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 11:06:01,925 INFO L82 PathProgramCache]: Analyzing trace with hash -2095161103, now seen corresponding path program 3 times [2021-03-24 11:06:01,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 11:06:01,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725922621] [2021-03-24 11:06:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 11:06:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 11:06:01,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 11:06:01,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 11:06:01,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 11:06:01,986 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-24 11:06:01,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 11:06:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 11:06:01,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725922621] [2021-03-24 11:06:01,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 11:06:01,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 11:06:01,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819835286] [2021-03-24 11:06:01,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 11:06:01,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 11:06:01,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 11:06:01,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-24 11:06:01,995 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 113 [2021-03-24 11:06:01,995 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 28 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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) [2021-03-24 11:06:01,995 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 11:06:01,995 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 113 [2021-03-24 11:06:01,995 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 11:06:02,007 INFO L129 PetriNetUnfolder]: 6/39 cut-off events. [2021-03-24 11:06:02,007 INFO L130 PetriNetUnfolder]: For 93/96 co-relation queries the response was YES. [2021-03-24 11:06:02,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 39 events. 6/39 cut-off events. For 93/96 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 53 event pairs, 0 based on Foata normal form. 2/40 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2021-03-24 11:06:02,007 INFO L132 encePairwiseOnDemand]: 109/113 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2021-03-24 11:06:02,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 27 transitions, 189 flow [2021-03-24 11:06:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 11:06:02,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 11:06:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2021-03-24 11:06:02,008 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7964601769911505 [2021-03-24 11:06:02,009 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2021-03-24 11:06:02,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2021-03-24 11:06:02,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 11:06:02,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2021-03-24 11:06:02,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2021-03-24 11:06:02,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:02,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 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) [2021-03-24 11:06:02,010 INFO L185 Difference]: Start difference. First operand has 70 places, 28 transitions, 183 flow. Second operand 4 states and 360 transitions. [2021-03-24 11:06:02,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 27 transitions, 189 flow [2021-03-24 11:06:02,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 27 transitions, 112 flow, removed 10 selfloop flow, removed 22 redundant places. [2021-03-24 11:06:02,011 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-24 11:06:02,011 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=113, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-24 11:06:02,011 INFO L343 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2021-03-24 11:06:02,011 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2021-03-24 11:06:02,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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) [2021-03-24 11:06:02,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 11:06:02,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 11:06:02 BasicIcfg [2021-03-24 11:06:02,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 11:06:02,018 INFO L168 Benchmark]: Toolchain (without parser) took 3692.89 ms. Allocated memory was 308.3 MB in the beginning and 371.2 MB in the end (delta: 62.9 MB). Free memory was 271.7 MB in the beginning and 312.6 MB in the end (delta: -40.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:02,018 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 308.3 MB. Free memory was 289.5 MB in the beginning and 289.4 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:06:02,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.00 ms. Allocated memory is still 308.3 MB. Free memory was 271.5 MB in the beginning and 271.5 MB in the end (delta: 51.8 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:02,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.59 ms. Allocated memory is still 308.3 MB. Free memory was 271.5 MB in the beginning and 270.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:02,019 INFO L168 Benchmark]: Boogie Preprocessor took 28.00 ms. Allocated memory is still 308.3 MB. Free memory was 270.4 MB in the beginning and 268.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:02,020 INFO L168 Benchmark]: RCFGBuilder took 400.03 ms. Allocated memory is still 308.3 MB. Free memory was 268.3 MB in the beginning and 244.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-24 11:06:02,020 INFO L168 Benchmark]: TraceAbstraction took 2783.09 ms. Allocated memory was 308.3 MB in the beginning and 371.2 MB in the end (delta: 62.9 MB). Free memory was 244.2 MB in the beginning and 312.6 MB in the end (delta: -68.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 11:06:02,021 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 308.3 MB. Free memory was 289.5 MB in the beginning and 289.4 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 428.00 ms. Allocated memory is still 308.3 MB. Free memory was 271.5 MB in the beginning and 271.5 MB in the end (delta: 51.8 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.59 ms. Allocated memory is still 308.3 MB. Free memory was 271.5 MB in the beginning and 270.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.00 ms. Allocated memory is still 308.3 MB. Free memory was 270.4 MB in the beginning and 268.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 400.03 ms. Allocated memory is still 308.3 MB. Free memory was 268.3 MB in the beginning and 244.2 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2783.09 ms. Allocated memory was 308.3 MB in the beginning and 371.2 MB in the end (delta: 62.9 MB). Free memory was 244.2 MB in the beginning and 312.6 MB in the end (delta: -68.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1249.5ms, 69 PlacesBefore, 32 PlacesAfterwards, 60 TransitionsBefore, 22 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 38 TotalNumberOfCompositions, 1010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 698, positive: 662, positive conditional: 0, positive unconditional: 662, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 433, positive: 416, positive conditional: 0, positive unconditional: 416, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 433, positive: 416, positive conditional: 0, positive unconditional: 416, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 698, positive: 246, positive conditional: 0, positive unconditional: 246, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 433, unknown conditional: 0, unknown unconditional: 433] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2712.2ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 721.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1296.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 51 SDtfs, 50 SDslu, 49 SDs, 0 SdLazy, 166 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 196.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=458occurred in iteration=7, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.4ms SsaConstructionTime, 134.2ms SatisfiabilityAnalysisTime, 425.9ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 775 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...