/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 05:11:54,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 05:11:54,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 05:11:54,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-25 05:11:54,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 05:11:54,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 05:11:54,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 05:11:54,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 05:11:54,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 05:11:54,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 05:11:54,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 05:11:54,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 05:11:54,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 05:11:54,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 05:11:54,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 05:11:54,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 05:11:54,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 05:11:54,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 05:11:54,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 05:11:54,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 05:11:54,092 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-RepeatedVariableLbe.epf [2021-03-25 05:11:54,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 05:11:54,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 05:11:54,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 05:11:54,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 05:11:54,124 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 05:11:54,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 05:11:54,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 05:11:54,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 05:11:54,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 05:11:54,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 05:11:54,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 05:11:54,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 05:11:54,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 05:11:54,126 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 05:11:54,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 05:11:54,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 05:11:54,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 05:11:54,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 05:11:54,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 05:11:54,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 05:11:54,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:11:54,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 05:11:54,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 05:11:54,128 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 05:11:54,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 05:11:54,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 05:11:54,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 05:11:54,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 05:11:54,389 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 05:11:54,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2021-03-25 05:11:54,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebde1a82d/ab432dfafa2f4544b5e84e928d52eaf2/FLAG3c43b58d3 [2021-03-25 05:11:54,837 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 05:11:54,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i [2021-03-25 05:11:54,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebde1a82d/ab432dfafa2f4544b5e84e928d52eaf2/FLAG3c43b58d3 [2021-03-25 05:11:55,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebde1a82d/ab432dfafa2f4544b5e84e928d52eaf2 [2021-03-25 05:11:55,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 05:11:55,215 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 05:11:55,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 05:11:55,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 05:11:55,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 05:11:55,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129a096c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55, skipping insertion in model container [2021-03-25 05:11:55,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 05:11:55,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 05:11:55,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i[949,962] [2021-03-25 05:11:55,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:11:55,530 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 05:11:55,538 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.opt.i[949,962] [2021-03-25 05:11:55,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 05:11:55,612 INFO L208 MainTranslator]: Completed translation [2021-03-25 05:11:55,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55 WrapperNode [2021-03-25 05:11:55,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 05:11:55,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 05:11:55,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 05:11:55,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 05:11:55,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 05:11:55,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 05:11:55,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 05:11:55,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 05:11:55,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... [2021-03-25 05:11:55,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 05:11:55,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 05:11:55,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 05:11:55,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 05:11:55,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 05:11:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 05:11:55,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-25 05:11:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 05:11:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 05:11:55,732 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-25 05:11:55,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-25 05:11:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-25 05:11:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-25 05:11:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-25 05:11:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-25 05:11:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 05:11:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-25 05:11:55,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 05:11:55,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 05:11:55,735 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 05:11:55,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 05:11:55,992 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-25 05:11:55,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:11:55 BoogieIcfgContainer [2021-03-25 05:11:55,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 05:11:55,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 05:11:55,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 05:11:55,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 05:11:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:11:55" (1/3) ... [2021-03-25 05:11:55,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685185cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:11:55, skipping insertion in model container [2021-03-25 05:11:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:11:55" (2/3) ... [2021-03-25 05:11:55,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@685185cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:11:55, skipping insertion in model container [2021-03-25 05:11:55,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:11:55" (3/3) ... [2021-03-25 05:11:55,999 INFO L111 eAbstractionObserver]: Analyzing ICFG safe034_tso.opt.i [2021-03-25 05:11:56,005 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 05:11:56,008 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 05:11:56,009 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 05:11:56,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,036 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,036 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,037 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,038 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,039 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,040 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,040 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,040 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,040 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,040 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,040 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,040 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,041 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,041 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,041 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,041 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,043 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,051 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,055 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 05:11:56,057 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 05:11:56,070 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 05:11:56,092 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 05:11:56,092 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 05:11:56,093 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 05:11:56,093 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 05:11:56,093 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 05:11:56,093 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 05:11:56,093 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 05:11:56,093 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 05:11:56,101 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:11:56,142 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-25 05:11:56,142 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:56,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-25 05:11:56,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-25 05:11:56,158 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-25 05:11:56,159 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:56,164 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:11:56,166 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-25 05:11:56,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-25 05:11:56,189 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-25 05:11:56,189 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:56,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-25 05:11:56,192 INFO L142 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-25 05:11:57,513 INFO L154 LiptonReduction]: Checked pairs total: 1222 [2021-03-25 05:11:57,513 INFO L156 LiptonReduction]: Total number of compositions: 41 [2021-03-25 05:11:57,515 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1357 [2021-03-25 05:11:57,520 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-03-25 05:11:57,521 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:57,521 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:57,521 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:57,521 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:57,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:57,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1222585768, now seen corresponding path program 1 times [2021-03-25 05:11:57,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:57,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917228050] [2021-03-25 05:11:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:57,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:57,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:57,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:57,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:57,677 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:11:57,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:11:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:57,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917228050] [2021-03-25 05:11:57,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:57,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:11:57,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927441231] [2021-03-25 05:11:57,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:57,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:57,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:57,699 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 116 [2021-03-25 05:11:57,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:57,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:57,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 116 [2021-03-25 05:11:57,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:57,732 INFO L129 PetriNetUnfolder]: 6/42 cut-off events. [2021-03-25 05:11:57,732 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:57,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 42 events. 6/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 96 event pairs, 2 based on Foata normal form. 4/46 useless extension candidates. Maximal degree in co-relation 60. Up to 15 conditions per place. [2021-03-25 05:11:57,733 INFO L132 encePairwiseOnDemand]: 111/116 looper letters, 4 selfloop transitions, 3 changer transitions 5/28 dead transitions. [2021-03-25 05:11:57,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 89 flow [2021-03-25 05:11:57,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:11:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:11:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2021-03-25 05:11:57,742 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8517241379310345 [2021-03-25 05:11:57,743 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2021-03-25 05:11:57,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2021-03-25 05:11:57,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:57,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2021-03-25 05:11:57,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:57,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:57,753 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:57,754 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 51 flow. Second operand 5 states and 494 transitions. [2021-03-25 05:11:57,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 89 flow [2021-03-25 05:11:57,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 05:11:57,756 INFO L241 Difference]: Finished difference. Result has 35 places, 23 transitions, 75 flow [2021-03-25 05:11:57,757 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2021-03-25 05:11:57,758 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2021-03-25 05:11:57,758 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:57,758 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 23 transitions, 75 flow [2021-03-25 05:11:57,758 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 23 transitions, 75 flow [2021-03-25 05:11:57,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 23 transitions, 75 flow [2021-03-25 05:11:57,762 INFO L129 PetriNetUnfolder]: 5/32 cut-off events. [2021-03-25 05:11:57,762 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 05:11:57,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 32 events. 5/32 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 2 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 56. Up to 12 conditions per place. [2021-03-25 05:11:57,763 INFO L142 LiptonReduction]: Number of co-enabled transitions 150 [2021-03-25 05:11:58,037 INFO L154 LiptonReduction]: Checked pairs total: 366 [2021-03-25 05:11:58,037 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:11:58,038 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 280 [2021-03-25 05:11:58,039 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 71 flow [2021-03-25 05:11:58,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,039 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:58,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:58,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 05:11:58,040 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash 754524341, now seen corresponding path program 1 times [2021-03-25 05:11:58,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:58,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342578091] [2021-03-25 05:11:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:58,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:58,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342578091] [2021-03-25 05:11:58,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:58,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:11:58,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732748776] [2021-03-25 05:11:58,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:58,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:58,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:58,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:58,137 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 118 [2021-03-25 05:11:58,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:58,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 118 [2021-03-25 05:11:58,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:58,171 INFO L129 PetriNetUnfolder]: 48/116 cut-off events. [2021-03-25 05:11:58,171 INFO L130 PetriNetUnfolder]: For 42/47 co-relation queries the response was YES. [2021-03-25 05:11:58,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 116 events. 48/116 cut-off events. For 42/47 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 474 event pairs, 21 based on Foata normal form. 16/125 useless extension candidates. Maximal degree in co-relation 264. Up to 61 conditions per place. [2021-03-25 05:11:58,173 INFO L132 encePairwiseOnDemand]: 112/118 looper letters, 7 selfloop transitions, 7 changer transitions 2/31 dead transitions. [2021-03-25 05:11:58,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 123 flow [2021-03-25 05:11:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:11:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:11:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 453 transitions. [2021-03-25 05:11:58,174 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7677966101694915 [2021-03-25 05:11:58,174 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 453 transitions. [2021-03-25 05:11:58,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 453 transitions. [2021-03-25 05:11:58,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:58,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 453 transitions. [2021-03-25 05:11:58,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,177 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,177 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 71 flow. Second operand 5 states and 453 transitions. [2021-03-25 05:11:58,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 123 flow [2021-03-25 05:11:58,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 118 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:11:58,179 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 120 flow [2021-03-25 05:11:58,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2021-03-25 05:11:58,179 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 05:11:58,179 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:58,179 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 27 transitions, 120 flow [2021-03-25 05:11:58,180 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 27 transitions, 120 flow [2021-03-25 05:11:58,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 120 flow [2021-03-25 05:11:58,188 INFO L129 PetriNetUnfolder]: 46/112 cut-off events. [2021-03-25 05:11:58,188 INFO L130 PetriNetUnfolder]: For 94/100 co-relation queries the response was YES. [2021-03-25 05:11:58,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 112 events. 46/112 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 453 event pairs, 21 based on Foata normal form. 2/106 useless extension candidates. Maximal degree in co-relation 307. Up to 64 conditions per place. [2021-03-25 05:11:58,190 INFO L142 LiptonReduction]: Number of co-enabled transitions 200 [2021-03-25 05:11:58,340 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:11:58,535 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-25 05:11:58,600 INFO L154 LiptonReduction]: Checked pairs total: 270 [2021-03-25 05:11:58,600 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 05:11:58,600 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 421 [2021-03-25 05:11:58,601 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 112 flow [2021-03-25 05:11:58,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,601 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:58,601 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:58,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 05:11:58,602 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:58,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:58,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1604402871, now seen corresponding path program 1 times [2021-03-25 05:11:58,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:58,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339717119] [2021-03-25 05:11:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:58,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:58,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339717119] [2021-03-25 05:11:58,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:58,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:58,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724336567] [2021-03-25 05:11:58,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:11:58,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:58,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:11:58,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:11:58,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2021-03-25 05:11:58,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 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) [2021-03-25 05:11:58,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:58,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2021-03-25 05:11:58,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:58,694 INFO L129 PetriNetUnfolder]: 23/71 cut-off events. [2021-03-25 05:11:58,694 INFO L130 PetriNetUnfolder]: For 103/114 co-relation queries the response was YES. [2021-03-25 05:11:58,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 71 events. 23/71 cut-off events. For 103/114 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 224 event pairs, 4 based on Foata normal form. 16/84 useless extension candidates. Maximal degree in co-relation 231. Up to 42 conditions per place. [2021-03-25 05:11:58,695 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 10 changer transitions 4/33 dead transitions. [2021-03-25 05:11:58,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 196 flow [2021-03-25 05:11:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 05:11:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 05:11:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 543 transitions. [2021-03-25 05:11:58,700 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7605042016806722 [2021-03-25 05:11:58,700 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 543 transitions. [2021-03-25 05:11:58,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 543 transitions. [2021-03-25 05:11:58,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:58,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 543 transitions. [2021-03-25 05:11:58,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,703 INFO L185 Difference]: Start difference. First operand has 35 places, 25 transitions, 112 flow. Second operand 6 states and 543 transitions. [2021-03-25 05:11:58,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 196 flow [2021-03-25 05:11:58,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 190 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:11:58,704 INFO L241 Difference]: Finished difference. Result has 39 places, 29 transitions, 174 flow [2021-03-25 05:11:58,704 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2021-03-25 05:11:58,705 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2021-03-25 05:11:58,705 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:58,705 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 29 transitions, 174 flow [2021-03-25 05:11:58,705 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 29 transitions, 174 flow [2021-03-25 05:11:58,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 174 flow [2021-03-25 05:11:58,710 INFO L129 PetriNetUnfolder]: 20/68 cut-off events. [2021-03-25 05:11:58,710 INFO L130 PetriNetUnfolder]: For 117/120 co-relation queries the response was YES. [2021-03-25 05:11:58,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 68 events. 20/68 cut-off events. For 117/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 239 event pairs, 4 based on Foata normal form. 1/66 useless extension candidates. Maximal degree in co-relation 237. Up to 39 conditions per place. [2021-03-25 05:11:58,711 INFO L142 LiptonReduction]: Number of co-enabled transitions 192 [2021-03-25 05:11:58,713 INFO L154 LiptonReduction]: Checked pairs total: 270 [2021-03-25 05:11:58,713 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:11:58,714 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9 [2021-03-25 05:11:58,714 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 166 flow [2021-03-25 05:11:58,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 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) [2021-03-25 05:11:58,714 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:58,714 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:58,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 05:11:58,715 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:58,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:58,715 INFO L82 PathProgramCache]: Analyzing trace with hash -712095256, now seen corresponding path program 1 times [2021-03-25 05:11:58,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:58,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154164727] [2021-03-25 05:11:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:58,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:58,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154164727] [2021-03-25 05:11:58,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:58,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 05:11:58,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660238270] [2021-03-25 05:11:58,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 05:11:58,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:58,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 05:11:58,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-25 05:11:58,755 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 119 [2021-03-25 05:11:58,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:58,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 119 [2021-03-25 05:11:58,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:58,794 INFO L129 PetriNetUnfolder]: 9/39 cut-off events. [2021-03-25 05:11:58,794 INFO L130 PetriNetUnfolder]: For 108/122 co-relation queries the response was YES. [2021-03-25 05:11:58,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 39 events. 9/39 cut-off events. For 108/122 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 72 event pairs, 0 based on Foata normal form. 13/51 useless extension candidates. Maximal degree in co-relation 146. Up to 24 conditions per place. [2021-03-25 05:11:58,795 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 2 selfloop transitions, 11 changer transitions 3/30 dead transitions. [2021-03-25 05:11:58,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 210 flow [2021-03-25 05:11:58,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 05:11:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 05:11:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2021-03-25 05:11:58,797 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7527010804321729 [2021-03-25 05:11:58,797 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2021-03-25 05:11:58,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2021-03-25 05:11:58,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:58,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2021-03-25 05:11:58,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,802 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,802 INFO L185 Difference]: Start difference. First operand has 39 places, 28 transitions, 166 flow. Second operand 7 states and 627 transitions. [2021-03-25 05:11:58,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 210 flow [2021-03-25 05:11:58,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 180 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-03-25 05:11:58,807 INFO L241 Difference]: Finished difference. Result has 42 places, 27 transitions, 160 flow [2021-03-25 05:11:58,807 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2021-03-25 05:11:58,807 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2021-03-25 05:11:58,807 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:58,807 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 27 transitions, 160 flow [2021-03-25 05:11:58,808 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 27 transitions, 160 flow [2021-03-25 05:11:58,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 27 transitions, 160 flow [2021-03-25 05:11:58,812 INFO L129 PetriNetUnfolder]: 7/36 cut-off events. [2021-03-25 05:11:58,812 INFO L130 PetriNetUnfolder]: For 60/63 co-relation queries the response was YES. [2021-03-25 05:11:58,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 36 events. 7/36 cut-off events. For 60/63 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 0 based on Foata normal form. 1/36 useless extension candidates. Maximal degree in co-relation 117. Up to 15 conditions per place. [2021-03-25 05:11:58,813 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-25 05:11:58,918 INFO L154 LiptonReduction]: Checked pairs total: 336 [2021-03-25 05:11:58,918 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 05:11:58,919 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 112 [2021-03-25 05:11:58,921 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 146 flow [2021-03-25 05:11:58,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,921 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:58,921 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:58,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 05:11:58,921 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:58,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:58,922 INFO L82 PathProgramCache]: Analyzing trace with hash 668992154, now seen corresponding path program 1 times [2021-03-25 05:11:58,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:58,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369224567] [2021-03-25 05:11:58,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:58,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:58,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:58,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:58,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-25 05:11:58,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-25 05:11:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:58,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369224567] [2021-03-25 05:11:58,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:58,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 05:11:58,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863252463] [2021-03-25 05:11:58,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 05:11:58,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:58,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 05:11:58,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 05:11:58,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 121 [2021-03-25 05:11:58,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:58,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 121 [2021-03-25 05:11:58,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:58,994 INFO L129 PetriNetUnfolder]: 14/49 cut-off events. [2021-03-25 05:11:58,994 INFO L130 PetriNetUnfolder]: For 247/265 co-relation queries the response was YES. [2021-03-25 05:11:58,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 49 events. 14/49 cut-off events. For 247/265 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 131 event pairs, 0 based on Foata normal form. 8/54 useless extension candidates. Maximal degree in co-relation 169. Up to 21 conditions per place. [2021-03-25 05:11:58,996 INFO L132 encePairwiseOnDemand]: 118/121 looper letters, 3 selfloop transitions, 1 changer transitions 1/25 dead transitions. [2021-03-25 05:11:58,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 158 flow [2021-03-25 05:11:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 05:11:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 05:11:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2021-03-25 05:11:58,998 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2021-03-25 05:11:58,998 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2021-03-25 05:11:58,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2021-03-25 05:11:58,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:58,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2021-03-25 05:11:58,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:58,999 INFO L185 Difference]: Start difference. First operand has 38 places, 24 transitions, 146 flow. Second operand 4 states and 374 transitions. [2021-03-25 05:11:58,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 158 flow [2021-03-25 05:11:59,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 116 flow, removed 12 selfloop flow, removed 7 redundant places. [2021-03-25 05:11:59,002 INFO L241 Difference]: Finished difference. Result has 36 places, 24 transitions, 111 flow [2021-03-25 05:11:59,002 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2021-03-25 05:11:59,002 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 05:11:59,002 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:59,002 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 24 transitions, 111 flow [2021-03-25 05:11:59,002 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 24 transitions, 111 flow [2021-03-25 05:11:59,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 24 transitions, 111 flow [2021-03-25 05:11:59,005 INFO L129 PetriNetUnfolder]: 9/38 cut-off events. [2021-03-25 05:11:59,005 INFO L130 PetriNetUnfolder]: For 68/76 co-relation queries the response was YES. [2021-03-25 05:11:59,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 38 events. 9/38 cut-off events. For 68/76 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 77 event pairs, 0 based on Foata normal form. 4/41 useless extension candidates. Maximal degree in co-relation 90. Up to 12 conditions per place. [2021-03-25 05:11:59,006 INFO L142 LiptonReduction]: Number of co-enabled transitions 112 [2021-03-25 05:11:59,023 INFO L154 LiptonReduction]: Checked pairs total: 126 [2021-03-25 05:11:59,023 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:11:59,024 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 05:11:59,028 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 114 flow [2021-03-25 05:11:59,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:59,028 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:59,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 05:11:59,028 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:59,029 INFO L82 PathProgramCache]: Analyzing trace with hash -600729225, now seen corresponding path program 1 times [2021-03-25 05:11:59,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:59,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823843925] [2021-03-25 05:11:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:59,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:59,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:59,069 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:11:59,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:11:59,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:59,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823843925] [2021-03-25 05:11:59,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:59,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 05:11:59,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320555970] [2021-03-25 05:11:59,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 05:11:59,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:59,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 05:11:59,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 05:11:59,075 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 122 [2021-03-25 05:11:59,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:59,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 122 [2021-03-25 05:11:59,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:59,089 INFO L129 PetriNetUnfolder]: 17/66 cut-off events. [2021-03-25 05:11:59,089 INFO L130 PetriNetUnfolder]: For 206/231 co-relation queries the response was YES. [2021-03-25 05:11:59,089 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 66 events. 17/66 cut-off events. For 206/231 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 233 event pairs, 1 based on Foata normal form. 12/72 useless extension candidates. Maximal degree in co-relation 177. Up to 20 conditions per place. [2021-03-25 05:11:59,090 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 4 selfloop transitions, 7 changer transitions 1/28 dead transitions. [2021-03-25 05:11:59,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 155 flow [2021-03-25 05:11:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 05:11:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 05:11:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2021-03-25 05:11:59,091 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7950819672131147 [2021-03-25 05:11:59,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2021-03-25 05:11:59,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2021-03-25 05:11:59,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:59,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2021-03-25 05:11:59,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,093 INFO L185 Difference]: Start difference. First operand has 35 places, 24 transitions, 114 flow. Second operand 3 states and 291 transitions. [2021-03-25 05:11:59,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 155 flow [2021-03-25 05:11:59,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 150 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-25 05:11:59,094 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 149 flow [2021-03-25 05:11:59,094 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2021-03-25 05:11:59,094 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 05:11:59,094 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:59,094 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 27 transitions, 149 flow [2021-03-25 05:11:59,095 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 27 transitions, 149 flow [2021-03-25 05:11:59,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 27 transitions, 149 flow [2021-03-25 05:11:59,098 INFO L129 PetriNetUnfolder]: 16/62 cut-off events. [2021-03-25 05:11:59,098 INFO L130 PetriNetUnfolder]: For 88/98 co-relation queries the response was YES. [2021-03-25 05:11:59,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 62 events. 16/62 cut-off events. For 88/98 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 203 event pairs, 1 based on Foata normal form. 5/62 useless extension candidates. Maximal degree in co-relation 169. Up to 20 conditions per place. [2021-03-25 05:11:59,099 INFO L142 LiptonReduction]: Number of co-enabled transitions 122 [2021-03-25 05:11:59,117 INFO L154 LiptonReduction]: Checked pairs total: 29 [2021-03-25 05:11:59,118 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 05:11:59,118 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-25 05:11:59,118 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 147 flow [2021-03-25 05:11:59,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,118 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 05:11:59,118 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 05:11:59,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 05:11:59,119 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 05:11:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 05:11:59,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1120822511, now seen corresponding path program 1 times [2021-03-25 05:11:59,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 05:11:59,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292986072] [2021-03-25 05:11:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 05:11:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 05:11:59,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:59,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 05:11:59,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 05:11:59,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 05:11:59,150 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 05:11:59,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 05:11:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 05:11:59,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292986072] [2021-03-25 05:11:59,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 05:11:59,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 05:11:59,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535633116] [2021-03-25 05:11:59,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 05:11:59,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 05:11:59,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 05:11:59,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 05:11:59,158 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 123 [2021-03-25 05:11:59,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 05:11:59,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 123 [2021-03-25 05:11:59,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 05:11:59,185 INFO L129 PetriNetUnfolder]: 24/82 cut-off events. [2021-03-25 05:11:59,185 INFO L130 PetriNetUnfolder]: For 224/272 co-relation queries the response was YES. [2021-03-25 05:11:59,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 82 events. 24/82 cut-off events. For 224/272 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 327 event pairs, 0 based on Foata normal form. 16/94 useless extension candidates. Maximal degree in co-relation 257. Up to 25 conditions per place. [2021-03-25 05:11:59,186 INFO L132 encePairwiseOnDemand]: 115/123 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2021-03-25 05:11:59,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 213 flow [2021-03-25 05:11:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 05:11:59,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 05:11:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2021-03-25 05:11:59,187 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7430894308943089 [2021-03-25 05:11:59,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2021-03-25 05:11:59,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2021-03-25 05:11:59,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 05:11:59,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2021-03-25 05:11:59,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,189 INFO L185 Difference]: Start difference. First operand has 35 places, 26 transitions, 147 flow. Second operand 5 states and 457 transitions. [2021-03-25 05:11:59,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 213 flow [2021-03-25 05:11:59,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 186 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 05:11:59,190 INFO L241 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2021-03-25 05:11:59,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2021-03-25 05:11:59,191 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2021-03-25 05:11:59,191 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 05:11:59,191 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 0 transitions, 0 flow [2021-03-25 05:11:59,191 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 0 transitions, 0 flow [2021-03-25 05:11:59,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 05:11:59,191 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 05:11:59,191 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 05:11:59,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 05:11:59,191 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 05:11:59,191 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 05:11:59,192 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 05:11:59,192 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 05:11:59,194 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 05:11:59,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 05:11:59,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 05:11:59,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:11:59 BasicIcfg [2021-03-25 05:11:59,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 05:11:59,199 INFO L168 Benchmark]: Toolchain (without parser) took 3982.22 ms. Allocated memory was 356.5 MB in the beginning and 438.3 MB in the end (delta: 81.8 MB). Free memory was 319.5 MB in the beginning and 213.8 MB in the end (delta: 105.8 MB). Peak memory consumption was 190.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:59,200 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 356.5 MB. Free memory was 337.6 MB in the beginning and 337.5 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 05:11:59,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.75 ms. Allocated memory is still 356.5 MB. Free memory was 319.3 MB in the beginning and 318.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:59,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 356.5 MB. Free memory was 318.2 MB in the beginning and 316.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:59,201 INFO L168 Benchmark]: Boogie Preprocessor took 24.69 ms. Allocated memory is still 356.5 MB. Free memory was 316.1 MB in the beginning and 315.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:59,201 INFO L168 Benchmark]: RCFGBuilder took 309.97 ms. Allocated memory is still 356.5 MB. Free memory was 314.0 MB in the beginning and 291.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:59,201 INFO L168 Benchmark]: TraceAbstraction took 3201.80 ms. Allocated memory was 356.5 MB in the beginning and 438.3 MB in the end (delta: 81.8 MB). Free memory was 289.9 MB in the beginning and 213.8 MB in the end (delta: 76.2 MB). Peak memory consumption was 158.0 MB. Max. memory is 16.0 GB. [2021-03-25 05:11:59,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 356.5 MB. Free memory was 337.6 MB in the beginning and 337.5 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 394.75 ms. Allocated memory is still 356.5 MB. Free memory was 319.3 MB in the beginning and 318.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 44.41 ms. Allocated memory is still 356.5 MB. Free memory was 318.2 MB in the beginning and 316.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.69 ms. Allocated memory is still 356.5 MB. Free memory was 316.1 MB in the beginning and 315.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 309.97 ms. Allocated memory is still 356.5 MB. Free memory was 314.0 MB in the beginning and 291.0 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3201.80 ms. Allocated memory was 356.5 MB in the beginning and 438.3 MB in the end (delta: 81.8 MB). Free memory was 289.9 MB in the beginning and 213.8 MB in the end (delta: 76.2 MB). Peak memory consumption was 158.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1347.2ms, 69 PlacesBefore, 31 PlacesAfterwards, 60 TransitionsBefore, 21 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 41 TotalNumberOfCompositions, 1222 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 722, positive: 679, positive conditional: 0, positive unconditional: 679, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 455, positive: 435, positive conditional: 0, positive unconditional: 435, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 455, positive: 435, positive conditional: 0, positive unconditional: 435, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 722, positive: 244, positive conditional: 0, positive unconditional: 244, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 455, unknown conditional: 0, unknown unconditional: 455] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 278.9ms, 35 PlacesBefore, 31 PlacesAfterwards, 23 TransitionsBefore, 21 TransitionsAfterwards, 150 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 366 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 205, positive: 175, positive conditional: 0, positive unconditional: 175, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 205, positive: 171, positive conditional: 0, positive unconditional: 171, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 420.6ms, 36 PlacesBefore, 35 PlacesAfterwards, 27 TransitionsBefore, 25 TransitionsAfterwards, 200 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 270 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 157, positive: 141, positive conditional: 0, positive unconditional: 141, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 157, positive: 136, positive conditional: 0, positive unconditional: 136, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 5, unknown conditional: 0, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2ms, 39 PlacesBefore, 39 PlacesAfterwards, 29 TransitionsBefore, 28 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 270 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 62, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 62, positive: 42, positive conditional: 0, positive unconditional: 42, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 41, Positive conditional cache size: 0, Positive unconditional cache size: 41, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 110.2ms, 42 PlacesBefore, 38 PlacesAfterwards, 27 TransitionsBefore, 24 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 336 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 226, positive: 199, positive conditional: 0, positive unconditional: 199, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 226, positive: 193, positive conditional: 0, positive unconditional: 193, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 35, Positive conditional cache size: 0, Positive unconditional cache size: 35, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.3ms, 36 PlacesBefore, 35 PlacesAfterwards, 24 TransitionsBefore, 24 TransitionsAfterwards, 112 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 126 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 96, positive: 86, positive conditional: 0, positive unconditional: 86, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 96, positive: 85, positive conditional: 0, positive unconditional: 85, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.1ms, 36 PlacesBefore, 35 PlacesAfterwards, 27 TransitionsBefore, 26 TransitionsAfterwards, 122 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 29 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4ms, 34 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3106.0ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 297.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1424.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 19 SDslu, 23 SDs, 0 SdLazy, 125 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=3, InterpolantAutomatonStates: 35, 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: 12.6ms SsaConstructionTime, 96.8ms SatisfiabilityAnalysisTime, 278.8ms InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...