/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:29:59,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:29:59,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:30:00,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-13 07:30:00,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:30:00,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:30:00,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:30:00,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:30:00,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:30:00,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:30:00,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:30:00,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:30:00,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:30:00,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:30:00,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:30:00,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:30:00,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:30:00,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:30:00,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:30:00,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:30:00,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 07:30:00,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:30:00,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:30:00,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:30:00,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:30:00,115 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:30:00,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:30:00,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:30:00,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:30:00,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:30:00,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:30:00,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:30:00,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:30:00,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:30:00,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:30:00,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:30:00,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:30:00,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:30:00,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:30:00,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:30:00,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:30:00,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:30:00,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:30:00,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:30:00,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:30:00,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:30:00,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:30:00,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:30:00,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:30:00,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:30:00,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:30:00,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:30:00,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:30:00,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:30:00,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:30:00,443 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:30:00,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-06-13 07:30:00,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea830c0c/bfc93cbdceab4f55bb1c2c8980217995/FLAG14d5f7868 [2021-06-13 07:30:01,091 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:30:01,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2021-06-13 07:30:01,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea830c0c/bfc93cbdceab4f55bb1c2c8980217995/FLAG14d5f7868 [2021-06-13 07:30:01,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea830c0c/bfc93cbdceab4f55bb1c2c8980217995 [2021-06-13 07:30:01,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:30:01,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:30:01,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:30:01,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:30:01,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:30:01,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2133223c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01, skipping insertion in model container [2021-06-13 07:30:01,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:30:01,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:30:01,596 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i[949,962] [2021-06-13 07:30:01,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:30:01,708 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:30:01,723 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i[949,962] [2021-06-13 07:30:01,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:30:01,811 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:30:01,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01 WrapperNode [2021-06-13 07:30:01,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:30:01,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:30:01,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:30:01,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:30:01,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:30:01,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:30:01,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:30:01,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:30:01,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (1/1) ... [2021-06-13 07:30:01,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:30:01,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:30:01,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:30:01,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:30:01,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (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 [2021-06-13 07:30:01,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:30:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:30:01,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:30:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:30:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:30:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:30:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:30:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:30:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:30:01,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:30:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:30:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:30:01,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:30:01,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:30:01,949 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:30:02,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:30:02,371 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:30:02,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:30:02 BoogieIcfgContainer [2021-06-13 07:30:02,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:30:02,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:30:02,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:30:02,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:30:02,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:30:01" (1/3) ... [2021-06-13 07:30:02,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8933e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:30:02, skipping insertion in model container [2021-06-13 07:30:02,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:01" (2/3) ... [2021-06-13 07:30:02,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8933e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:30:02, skipping insertion in model container [2021-06-13 07:30:02,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:30:02" (3/3) ... [2021-06-13 07:30:02,381 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2021-06-13 07:30:02,386 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:30:02,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:30:02,387 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:30:02,419 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,421 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,422 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,422 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,423 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,423 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,424 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,424 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,425 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,425 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,428 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,429 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,430 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,430 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,437 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:02,446 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:30:02,468 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:30:02,498 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:30:02,499 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:30:02,499 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:30:02,499 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:30:02,499 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:30:02,499 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:30:02,499 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:30:02,499 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:30:02,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-06-13 07:30:02,566 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-06-13 07:30:02,566 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:30:02,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-06-13 07:30:02,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-06-13 07:30:02,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-06-13 07:30:02,612 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-06-13 07:30:02,613 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:30:02,613 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:02,614 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:02,614 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:02,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1134513361, now seen corresponding path program 1 times [2021-06-13 07:30:02,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:02,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446520034] [2021-06-13 07:30:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:02,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:02,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:02,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:02,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:02,925 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:02,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:02,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:02,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:02,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:02,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:02,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:02,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:02,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:02,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446520034] [2021-06-13 07:30:02,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446520034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:02,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:02,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:30:02,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789729861] [2021-06-13 07:30:02,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:30:02,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:02,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:30:02,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:30:03,004 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-06-13 07:30:03,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:03,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-06-13 07:30:03,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:03,200 INFO L129 PetriNetUnfolder]: 24/142 cut-off events. [2021-06-13 07:30:03,200 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:30:03,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 142 events. 24/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 419 event pairs, 5 based on Foata normal form. 6/145 useless extension candidates. Maximal degree in co-relation 183. Up to 31 conditions per place. [2021-06-13 07:30:03,203 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 8 selfloop transitions, 3 changer transitions 19/88 dead transitions. [2021-06-13 07:30:03,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 245 flow [2021-06-13 07:30:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:30:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:30:03,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 664 transitions. [2021-06-13 07:30:03,217 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2021-06-13 07:30:03,218 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 664 transitions. [2021-06-13 07:30:03,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 664 transitions. [2021-06-13 07:30:03,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:03,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 664 transitions. [2021-06-13 07:30:03,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.77777777777777) internal successors, (664), 9 states have internal predecessors, (664), 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) [2021-06-13 07:30:03,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,238 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,240 INFO L185 Difference]: Start difference. First operand has 77 places, 68 transitions, 145 flow. Second operand 9 states and 664 transitions. [2021-06-13 07:30:03,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 245 flow [2021-06-13 07:30:03,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 88 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:30:03,249 INFO L241 Difference]: Finished difference. Result has 89 places, 69 transitions, 183 flow [2021-06-13 07:30:03,251 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=183, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2021-06-13 07:30:03,252 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2021-06-13 07:30:03,252 INFO L482 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 183 flow [2021-06-13 07:30:03,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,253 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:03,253 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:03,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:30:03,254 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:03,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:03,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1633940464, now seen corresponding path program 1 times [2021-06-13 07:30:03,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:03,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140057319] [2021-06-13 07:30:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:03,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:03,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:03,402 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:03,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:03,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:03,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:03,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:03,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140057319] [2021-06-13 07:30:03,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140057319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:03,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:03,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:30:03,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015866580] [2021-06-13 07:30:03,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:30:03,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:30:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:30:03,480 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 83 [2021-06-13 07:30:03,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:03,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 83 [2021-06-13 07:30:03,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:03,640 INFO L129 PetriNetUnfolder]: 14/115 cut-off events. [2021-06-13 07:30:03,640 INFO L130 PetriNetUnfolder]: For 107/109 co-relation queries the response was YES. [2021-06-13 07:30:03,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 115 events. 14/115 cut-off events. For 107/109 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 6 based on Foata normal form. 3/115 useless extension candidates. Maximal degree in co-relation 219. Up to 20 conditions per place. [2021-06-13 07:30:03,643 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 6 selfloop transitions, 2 changer transitions 10/79 dead transitions. [2021-06-13 07:30:03,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 79 transitions, 257 flow [2021-06-13 07:30:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:30:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:30:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 659 transitions. [2021-06-13 07:30:03,646 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8821954484605087 [2021-06-13 07:30:03,646 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 659 transitions. [2021-06-13 07:30:03,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 659 transitions. [2021-06-13 07:30:03,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:03,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 659 transitions. [2021-06-13 07:30:03,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.22222222222223) internal successors, (659), 9 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,653 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,653 INFO L185 Difference]: Start difference. First operand has 89 places, 69 transitions, 183 flow. Second operand 9 states and 659 transitions. [2021-06-13 07:30:03,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 79 transitions, 257 flow [2021-06-13 07:30:03,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 79 transitions, 240 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-13 07:30:03,659 INFO L241 Difference]: Finished difference. Result has 94 places, 69 transitions, 194 flow [2021-06-13 07:30:03,660 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=94, PETRI_TRANSITIONS=69} [2021-06-13 07:30:03,660 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2021-06-13 07:30:03,660 INFO L482 AbstractCegarLoop]: Abstraction has has 94 places, 69 transitions, 194 flow [2021-06-13 07:30:03,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,661 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:03,661 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:03,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:30:03,661 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -961663620, now seen corresponding path program 1 times [2021-06-13 07:30:03,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:03,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046478507] [2021-06-13 07:30:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:03,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:03,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:03,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:03,744 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:03,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:03,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:03,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:03,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:03,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:03,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:03,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046478507] [2021-06-13 07:30:03,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046478507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:03,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:03,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:03,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262162667] [2021-06-13 07:30:03,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:03,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:03,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:03,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:03,787 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-06-13 07:30:03,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 69 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:03,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:03,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-06-13 07:30:03,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:03,992 INFO L129 PetriNetUnfolder]: 33/162 cut-off events. [2021-06-13 07:30:03,993 INFO L130 PetriNetUnfolder]: For 268/290 co-relation queries the response was YES. [2021-06-13 07:30:03,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 162 events. 33/162 cut-off events. For 268/290 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 530 event pairs, 10 based on Foata normal form. 6/162 useless extension candidates. Maximal degree in co-relation 383. Up to 37 conditions per place. [2021-06-13 07:30:04,001 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 6 selfloop transitions, 4 changer transitions 12/81 dead transitions. [2021-06-13 07:30:04,001 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 81 transitions, 297 flow [2021-06-13 07:30:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:30:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:30:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 714 transitions. [2021-06-13 07:30:04,004 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8602409638554217 [2021-06-13 07:30:04,004 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 714 transitions. [2021-06-13 07:30:04,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 714 transitions. [2021-06-13 07:30:04,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:04,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 714 transitions. [2021-06-13 07:30:04,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.4) internal successors, (714), 10 states have internal predecessors, (714), 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) [2021-06-13 07:30:04,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,009 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,009 INFO L185 Difference]: Start difference. First operand has 94 places, 69 transitions, 194 flow. Second operand 10 states and 714 transitions. [2021-06-13 07:30:04,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 81 transitions, 297 flow [2021-06-13 07:30:04,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 263 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-13 07:30:04,015 INFO L241 Difference]: Finished difference. Result has 97 places, 69 transitions, 208 flow [2021-06-13 07:30:04,016 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=208, PETRI_PLACES=97, PETRI_TRANSITIONS=69} [2021-06-13 07:30:04,016 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2021-06-13 07:30:04,016 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 69 transitions, 208 flow [2021-06-13 07:30:04,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,016 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:04,017 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:04,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:30:04,017 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:04,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1712342093, now seen corresponding path program 1 times [2021-06-13 07:30:04,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:04,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706704203] [2021-06-13 07:30:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:04,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:04,110 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:04,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:04,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:04,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:04,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:04,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:04,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706704203] [2021-06-13 07:30:04,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706704203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:04,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:04,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:30:04,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828049762] [2021-06-13 07:30:04,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:30:04,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:04,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:30:04,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:30:04,157 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-06-13 07:30:04,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 69 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 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) [2021-06-13 07:30:04,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:04,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-06-13 07:30:04,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:04,285 INFO L129 PetriNetUnfolder]: 7/133 cut-off events. [2021-06-13 07:30:04,286 INFO L130 PetriNetUnfolder]: For 174/182 co-relation queries the response was YES. [2021-06-13 07:30:04,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 133 events. 7/133 cut-off events. For 174/182 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 386 event pairs, 0 based on Foata normal form. 3/135 useless extension candidates. Maximal degree in co-relation 269. Up to 18 conditions per place. [2021-06-13 07:30:04,287 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 12 selfloop transitions, 3 changer transitions 11/83 dead transitions. [2021-06-13 07:30:04,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 83 transitions, 360 flow [2021-06-13 07:30:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:30:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:30:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 656 transitions. [2021-06-13 07:30:04,289 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8781793842034806 [2021-06-13 07:30:04,289 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 656 transitions. [2021-06-13 07:30:04,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 656 transitions. [2021-06-13 07:30:04,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:04,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 656 transitions. [2021-06-13 07:30:04,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.88888888888889) internal successors, (656), 9 states have internal predecessors, (656), 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) [2021-06-13 07:30:04,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,293 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,293 INFO L185 Difference]: Start difference. First operand has 97 places, 69 transitions, 208 flow. Second operand 9 states and 656 transitions. [2021-06-13 07:30:04,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 83 transitions, 360 flow [2021-06-13 07:30:04,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 294 flow, removed 28 selfloop flow, removed 10 redundant places. [2021-06-13 07:30:04,296 INFO L241 Difference]: Finished difference. Result has 96 places, 68 transitions, 201 flow [2021-06-13 07:30:04,296 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2021-06-13 07:30:04,297 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2021-06-13 07:30:04,297 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 201 flow [2021-06-13 07:30:04,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 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) [2021-06-13 07:30:04,297 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:04,297 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:04,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:30:04,297 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:04,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:04,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1060209770, now seen corresponding path program 1 times [2021-06-13 07:30:04,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:04,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572742594] [2021-06-13 07:30:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:04,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:04,339 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:30:04,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:30:04,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:30:04,374 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:30:04,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:04,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:04,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:04,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572742594] [2021-06-13 07:30:04,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572742594] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:04,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:04,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:30:04,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374839678] [2021-06-13 07:30:04,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:30:04,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:04,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:30:04,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:30:04,386 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-06-13 07:30:04,386 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:04,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-06-13 07:30:04,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:04,564 INFO L129 PetriNetUnfolder]: 190/524 cut-off events. [2021-06-13 07:30:04,564 INFO L130 PetriNetUnfolder]: For 339/349 co-relation queries the response was YES. [2021-06-13 07:30:04,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1089 conditions, 524 events. 190/524 cut-off events. For 339/349 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3127 event pairs, 13 based on Foata normal form. 14/507 useless extension candidates. Maximal degree in co-relation 1047. Up to 161 conditions per place. [2021-06-13 07:30:04,568 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 10 selfloop transitions, 6 changer transitions 19/93 dead transitions. [2021-06-13 07:30:04,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 321 flow [2021-06-13 07:30:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:30:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:30:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 658 transitions. [2021-06-13 07:30:04,571 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8808567603748326 [2021-06-13 07:30:04,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 658 transitions. [2021-06-13 07:30:04,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 658 transitions. [2021-06-13 07:30:04,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:04,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 658 transitions. [2021-06-13 07:30:04,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.11111111111111) internal successors, (658), 9 states have internal predecessors, (658), 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) [2021-06-13 07:30:04,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,575 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,575 INFO L185 Difference]: Start difference. First operand has 96 places, 68 transitions, 201 flow. Second operand 9 states and 658 transitions. [2021-06-13 07:30:04,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 321 flow [2021-06-13 07:30:04,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 93 transitions, 300 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-06-13 07:30:04,580 INFO L241 Difference]: Finished difference. Result has 96 places, 71 transitions, 236 flow [2021-06-13 07:30:04,580 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2021-06-13 07:30:04,580 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2021-06-13 07:30:04,580 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 236 flow [2021-06-13 07:30:04,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,580 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:04,581 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:04,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:30:04,581 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:04,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:04,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1110029393, now seen corresponding path program 1 times [2021-06-13 07:30:04,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:04,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590280626] [2021-06-13 07:30:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:04,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:04,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:04,627 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:30:04,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:30:04,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:30:04,653 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:30:04,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:04,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:04,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:04,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590280626] [2021-06-13 07:30:04,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590280626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:04,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:04,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:04,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711084964] [2021-06-13 07:30:04,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:04,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:04,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:04,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:04,668 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-06-13 07:30:04,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:04,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-06-13 07:30:04,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:04,854 INFO L129 PetriNetUnfolder]: 107/342 cut-off events. [2021-06-13 07:30:04,855 INFO L130 PetriNetUnfolder]: For 634/725 co-relation queries the response was YES. [2021-06-13 07:30:04,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 342 events. 107/342 cut-off events. For 634/725 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1711 event pairs, 3 based on Foata normal form. 26/357 useless extension candidates. Maximal degree in co-relation 1098. Up to 148 conditions per place. [2021-06-13 07:30:04,859 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 10 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2021-06-13 07:30:04,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 489 flow [2021-06-13 07:30:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:30:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:30:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 730 transitions. [2021-06-13 07:30:04,862 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8795180722891566 [2021-06-13 07:30:04,862 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 730 transitions. [2021-06-13 07:30:04,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 730 transitions. [2021-06-13 07:30:04,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:04,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 730 transitions. [2021-06-13 07:30:04,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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) [2021-06-13 07:30:04,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,867 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,867 INFO L185 Difference]: Start difference. First operand has 96 places, 71 transitions, 236 flow. Second operand 10 states and 730 transitions. [2021-06-13 07:30:04,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 489 flow [2021-06-13 07:30:04,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 465 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-13 07:30:04,871 INFO L241 Difference]: Finished difference. Result has 102 places, 74 transitions, 304 flow [2021-06-13 07:30:04,872 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=304, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2021-06-13 07:30:04,872 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 25 predicate places. [2021-06-13 07:30:04,872 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 304 flow [2021-06-13 07:30:04,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:04,873 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:04,873 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:04,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:30:04,873 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:04,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1179822140, now seen corresponding path program 1 times [2021-06-13 07:30:04,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:04,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759684367] [2021-06-13 07:30:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:04,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:04,932 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:04,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:04,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:04,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:04,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:04,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:04,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:04,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759684367] [2021-06-13 07:30:04,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759684367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:04,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:04,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:30:04,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746083963] [2021-06-13 07:30:04,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:30:04,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:04,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:30:04,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:30:04,974 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-06-13 07:30:04,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2021-06-13 07:30:04,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:04,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-06-13 07:30:04,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:05,070 INFO L129 PetriNetUnfolder]: 51/293 cut-off events. [2021-06-13 07:30:05,070 INFO L130 PetriNetUnfolder]: For 857/929 co-relation queries the response was YES. [2021-06-13 07:30:05,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 293 events. 51/293 cut-off events. For 857/929 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1383 event pairs, 14 based on Foata normal form. 9/295 useless extension candidates. Maximal degree in co-relation 923. Up to 82 conditions per place. [2021-06-13 07:30:05,073 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 12 selfloop transitions, 2 changer transitions 5/83 dead transitions. [2021-06-13 07:30:05,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 83 transitions, 374 flow [2021-06-13 07:30:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-13 07:30:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-13 07:30:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2021-06-13 07:30:05,075 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8815261044176707 [2021-06-13 07:30:05,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 439 transitions. [2021-06-13 07:30:05,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 439 transitions. [2021-06-13 07:30:05,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:05,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 439 transitions. [2021-06-13 07:30:05,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:05,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2021-06-13 07:30:05,077 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2021-06-13 07:30:05,077 INFO L185 Difference]: Start difference. First operand has 102 places, 74 transitions, 304 flow. Second operand 6 states and 439 transitions. [2021-06-13 07:30:05,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 83 transitions, 374 flow [2021-06-13 07:30:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 83 transitions, 318 flow, removed 20 selfloop flow, removed 9 redundant places. [2021-06-13 07:30:05,081 INFO L241 Difference]: Finished difference. Result has 98 places, 74 transitions, 256 flow [2021-06-13 07:30:05,082 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=98, PETRI_TRANSITIONS=74} [2021-06-13 07:30:05,082 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2021-06-13 07:30:05,082 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 74 transitions, 256 flow [2021-06-13 07:30:05,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2021-06-13 07:30:05,082 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:05,082 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:05,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:30:05,083 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:05,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:05,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1097969308, now seen corresponding path program 2 times [2021-06-13 07:30:05,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:05,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220586878] [2021-06-13 07:30:05,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:05,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:05,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:05,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:05,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:05,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:05,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:05,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:05,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:05,150 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:30:05,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:30:05,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:05,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:30:05,173 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:30:05,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:05,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:05,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:05,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:05,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220586878] [2021-06-13 07:30:05,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220586878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:05,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:05,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:30:05,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820020875] [2021-06-13 07:30:05,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:30:05,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:05,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:30:05,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:30:05,185 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-06-13 07:30:05,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 74 transitions, 256 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:05,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:05,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-06-13 07:30:05,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:05,335 INFO L129 PetriNetUnfolder]: 33/216 cut-off events. [2021-06-13 07:30:05,335 INFO L130 PetriNetUnfolder]: For 315/403 co-relation queries the response was YES. [2021-06-13 07:30:05,336 INFO L84 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 216 events. 33/216 cut-off events. For 315/403 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1020 event pairs, 0 based on Foata normal form. 42/253 useless extension candidates. Maximal degree in co-relation 587. Up to 64 conditions per place. [2021-06-13 07:30:05,336 INFO L132 encePairwiseOnDemand]: 74/83 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2021-06-13 07:30:05,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 79 transitions, 343 flow [2021-06-13 07:30:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:30:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:30:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 787 transitions. [2021-06-13 07:30:05,339 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8619934282584885 [2021-06-13 07:30:05,339 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 787 transitions. [2021-06-13 07:30:05,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 787 transitions. [2021-06-13 07:30:05,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:05,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 787 transitions. [2021-06-13 07:30:05,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 71.54545454545455) internal successors, (787), 11 states have internal predecessors, (787), 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) [2021-06-13 07:30:05,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2021-06-13 07:30:05,343 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 83.0) internal successors, (996), 12 states have internal predecessors, (996), 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) [2021-06-13 07:30:05,343 INFO L185 Difference]: Start difference. First operand has 98 places, 74 transitions, 256 flow. Second operand 11 states and 787 transitions. [2021-06-13 07:30:05,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 79 transitions, 343 flow [2021-06-13 07:30:05,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 79 transitions, 318 flow, removed 9 selfloop flow, removed 6 redundant places. [2021-06-13 07:30:05,345 INFO L241 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2021-06-13 07:30:05,345 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2021-06-13 07:30:05,346 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2021-06-13 07:30:05,346 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2021-06-13 07:30:05,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:05,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:30:05,348 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:30:05,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:30:05 BasicIcfg [2021-06-13 07:30:05,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:30:05,352 INFO L168 Benchmark]: Toolchain (without parser) took 3969.77 ms. Allocated memory was 255.9 MB in the beginning and 307.2 MB in the end (delta: 51.4 MB). Free memory was 218.7 MB in the beginning and 116.8 MB in the end (delta: 101.9 MB). Peak memory consumption was 154.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:05,352 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:30:05,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.85 ms. Allocated memory is still 255.9 MB. Free memory was 218.5 MB in the beginning and 217.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:05,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.64 ms. Allocated memory is still 255.9 MB. Free memory was 217.3 MB in the beginning and 215.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:05,353 INFO L168 Benchmark]: Boogie Preprocessor took 19.30 ms. Allocated memory is still 255.9 MB. Free memory was 215.7 MB in the beginning and 214.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:05,353 INFO L168 Benchmark]: RCFGBuilder took 506.37 ms. Allocated memory is still 255.9 MB. Free memory was 214.1 MB in the beginning and 190.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:05,354 INFO L168 Benchmark]: TraceAbstraction took 2975.28 ms. Allocated memory was 255.9 MB in the beginning and 307.2 MB in the end (delta: 51.4 MB). Free memory was 189.5 MB in the beginning and 116.8 MB in the end (delta: 72.7 MB). Peak memory consumption was 125.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:05,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 428.85 ms. Allocated memory is still 255.9 MB. Free memory was 218.5 MB in the beginning and 217.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.64 ms. Allocated memory is still 255.9 MB. Free memory was 217.3 MB in the beginning and 215.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.30 ms. Allocated memory is still 255.9 MB. Free memory was 215.7 MB in the beginning and 214.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 506.37 ms. Allocated memory is still 255.9 MB. Free memory was 214.1 MB in the beginning and 190.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2975.28 ms. Allocated memory was 255.9 MB in the beginning and 307.2 MB in the end (delta: 51.4 MB). Free memory was 189.5 MB in the beginning and 116.8 MB in the end (delta: 72.7 MB). Peak memory consumption was 125.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 29.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2853.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1485.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 148 SDslu, 205 SDs, 0 SdLazy, 285 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 227.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 932.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred in iteration=6, InterpolantAutomatonStates: 73, 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: 36.0ms SsaConstructionTime, 195.1ms SatisfiabilityAnalysisTime, 838.4ms InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 422 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...