/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:32:16,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:32:16,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:32:16,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:32:16,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:32:16,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:32:16,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:32:16,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:32:16,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:32:16,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:32:16,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:32:16,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:32:16,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:32:16,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:32:16,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:32:16,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:32:16,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:32:16,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:32:16,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:32:16,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:32:16,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:32:16,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:32:16,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:32:16,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:32:16,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 07:32:16,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 07:32:16,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 07:32:16,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 07:32:16,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 07:32:16,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 07:32:16,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:32:16,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:32:16,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:32:16,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:32:16,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:32:16,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:32:16,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:32:16,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:32:16,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:32:16,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:32:16,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:32:16,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 07:32:16,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:32:16,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:32:16,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:32:16,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:32:16,928 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:32:16,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:32:16,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:32:16,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:32:16,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:32:16,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:32:16,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:32:16,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:32:16,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:32:16,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:32:16,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:32:16,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:32:16,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:32:16,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:32:16,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:32:16,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:32:16,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:32:16,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:32:16,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:32:16,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:32:16,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:32:16,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:32:16,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:32:16,931 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:32:16,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:32:16,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:32:17,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:32:17,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:32:17,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:32:17,195 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:32:17,195 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:32:17,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-06-13 07:32:17,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52352e5b7/79276e0d2a3a485b93a0b36ced9afe7b/FLAG6ba08e571 [2021-06-13 07:32:17,609 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:32:17,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i [2021-06-13 07:32:17,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52352e5b7/79276e0d2a3a485b93a0b36ced9afe7b/FLAG6ba08e571 [2021-06-13 07:32:17,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52352e5b7/79276e0d2a3a485b93a0b36ced9afe7b [2021-06-13 07:32:17,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:32:17,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:32:17,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:32:17,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:32:17,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:32:17,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:32:17" (1/1) ... [2021-06-13 07:32:17,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddce00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:17, skipping insertion in model container [2021-06-13 07:32:17,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:32:17" (1/1) ... [2021-06-13 07:32:17,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:32:18,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:32:18,104 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i[949,962] [2021-06-13 07:32:18,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:32:18,216 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:32:18,223 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_tso.opt.i[949,962] [2021-06-13 07:32:18,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:32:18,316 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:32:18,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18 WrapperNode [2021-06-13 07:32:18,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:32:18,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:32:18,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:32:18,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:32:18,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:32:18,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:32:18,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:32:18,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:32:18,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... [2021-06-13 07:32:18,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:32:18,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:32:18,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:32:18,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:32:18,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:32:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:32:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:32:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:32:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:32:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:32:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:32:18,427 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:32:18,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:32:18,694 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:32:18,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:32:18 BoogieIcfgContainer [2021-06-13 07:32:18,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:32:18,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:32:18,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:32:18,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:32:18,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:32:17" (1/3) ... [2021-06-13 07:32:18,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6cdea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:32:18, skipping insertion in model container [2021-06-13 07:32:18,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:32:18" (2/3) ... [2021-06-13 07:32:18,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6cdea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:32:18, skipping insertion in model container [2021-06-13 07:32:18,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:32:18" (3/3) ... [2021-06-13 07:32:18,700 INFO L111 eAbstractionObserver]: Analyzing ICFG safe020_tso.opt.i [2021-06-13 07:32:18,703 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:32:18,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:32:18,704 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:32:18,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,729 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,729 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,730 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,730 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,731 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,732 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,732 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,733 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,734 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,734 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,735 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,737 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,738 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,740 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,740 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,740 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,744 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,745 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,745 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,747 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,747 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:32:18,748 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:32:18,763 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:32:18,783 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:32:18,783 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:32:18,783 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:32:18,783 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:32:18,783 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:32:18,783 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:32:18,783 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:32:18,783 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:32:18,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:32:18,837 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-06-13 07:32:18,837 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:32:18,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-06-13 07:32:18,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:32:18,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-06-13 07:32:18,870 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-06-13 07:32:18,871 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:32:18,871 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:18,871 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:18,872 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:18,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:18,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1333187383, now seen corresponding path program 1 times [2021-06-13 07:32:18,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:18,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59959204] [2021-06-13 07:32:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:19,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:19,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:19,126 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:32:19,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:32:19,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:19,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:19,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:19,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:19,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59959204] [2021-06-13 07:32:19,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59959204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:19,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:19,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:32:19,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688644409] [2021-06-13 07:32:19,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:32:19,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:19,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:32:19,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:32:19,193 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 82 [2021-06-13 07:32:19,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:19,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 82 [2021-06-13 07:32:19,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:19,377 INFO L129 PetriNetUnfolder]: 24/144 cut-off events. [2021-06-13 07:32:19,379 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:32:19,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 144 events. 24/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 445 event pairs, 5 based on Foata normal form. 6/147 useless extension candidates. Maximal degree in co-relation 185. Up to 31 conditions per place. [2021-06-13 07:32:19,381 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 8 selfloop transitions, 3 changer transitions 19/87 dead transitions. [2021-06-13 07:32:19,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 87 transitions, 243 flow [2021-06-13 07:32:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:32:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:32:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 655 transitions. [2021-06-13 07:32:19,393 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8875338753387534 [2021-06-13 07:32:19,394 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 655 transitions. [2021-06-13 07:32:19,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 655 transitions. [2021-06-13 07:32:19,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:19,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 655 transitions. [2021-06-13 07:32:19,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.77777777777777) internal successors, (655), 9 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,407 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,408 INFO L185 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 9 states and 655 transitions. [2021-06-13 07:32:19,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 87 transitions, 243 flow [2021-06-13 07:32:19,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 87 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:32:19,412 INFO L241 Difference]: Finished difference. Result has 88 places, 68 transitions, 181 flow [2021-06-13 07:32:19,414 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=181, PETRI_PLACES=88, PETRI_TRANSITIONS=68} [2021-06-13 07:32:19,414 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 12 predicate places. [2021-06-13 07:32:19,414 INFO L482 AbstractCegarLoop]: Abstraction has has 88 places, 68 transitions, 181 flow [2021-06-13 07:32:19,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,415 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:19,415 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:19,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:32:19,415 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:19,415 INFO L82 PathProgramCache]: Analyzing trace with hash 740790678, now seen corresponding path program 1 times [2021-06-13 07:32:19,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:19,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650047878] [2021-06-13 07:32:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:19,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:19,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:19,505 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:32:19,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:32:19,515 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:32:19,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:32:19,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:19,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:19,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:19,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:19,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650047878] [2021-06-13 07:32:19,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650047878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:19,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:19,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:32:19,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749852228] [2021-06-13 07:32:19,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:32:19,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:19,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:32:19,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:32:19,557 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-06-13 07:32:19,558 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 68 transitions, 181 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 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) [2021-06-13 07:32:19,558 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:19,558 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-06-13 07:32:19,558 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:19,753 INFO L129 PetriNetUnfolder]: 58/248 cut-off events. [2021-06-13 07:32:19,754 INFO L130 PetriNetUnfolder]: For 241/287 co-relation queries the response was YES. [2021-06-13 07:32:19,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 248 events. 58/248 cut-off events. For 241/287 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1012 event pairs, 5 based on Foata normal form. 9/248 useless extension candidates. Maximal degree in co-relation 552. Up to 45 conditions per place. [2021-06-13 07:32:19,758 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 16 selfloop transitions, 6 changer transitions 29/104 dead transitions. [2021-06-13 07:32:19,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 104 transitions, 446 flow [2021-06-13 07:32:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:32:19,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:32:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 898 transitions. [2021-06-13 07:32:19,761 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8424015009380863 [2021-06-13 07:32:19,761 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 898 transitions. [2021-06-13 07:32:19,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 898 transitions. [2021-06-13 07:32:19,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:19,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 898 transitions. [2021-06-13 07:32:19,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.07692307692308) internal successors, (898), 13 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,769 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,769 INFO L185 Difference]: Start difference. First operand has 88 places, 68 transitions, 181 flow. Second operand 13 states and 898 transitions. [2021-06-13 07:32:19,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 104 transitions, 446 flow [2021-06-13 07:32:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 104 transitions, 410 flow, removed 16 selfloop flow, removed 4 redundant places. [2021-06-13 07:32:19,774 INFO L241 Difference]: Finished difference. Result has 101 places, 69 transitions, 220 flow [2021-06-13 07:32:19,775 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=220, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2021-06-13 07:32:19,775 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2021-06-13 07:32:19,775 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 220 flow [2021-06-13 07:32:19,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 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) [2021-06-13 07:32:19,776 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:19,776 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:19,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:32:19,776 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:19,776 INFO L82 PathProgramCache]: Analyzing trace with hash 457798869, now seen corresponding path program 1 times [2021-06-13 07:32:19,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:19,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590631636] [2021-06-13 07:32:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:19,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:19,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:19,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:19,816 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:32:19,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:32:19,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:19,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:19,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:19,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:19,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:19,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590631636] [2021-06-13 07:32:19,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590631636] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:19,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:19,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:32:19,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231423287] [2021-06-13 07:32:19,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:32:19,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:19,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:32:19,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:32:19,854 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-06-13 07:32:19,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:19,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:19,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-06-13 07:32:19,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:20,023 INFO L129 PetriNetUnfolder]: 83/300 cut-off events. [2021-06-13 07:32:20,024 INFO L130 PetriNetUnfolder]: For 1055/1272 co-relation queries the response was YES. [2021-06-13 07:32:20,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 300 events. 83/300 cut-off events. For 1055/1272 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1345 event pairs, 20 based on Foata normal form. 13/302 useless extension candidates. Maximal degree in co-relation 951. Up to 65 conditions per place. [2021-06-13 07:32:20,027 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 10 selfloop transitions, 4 changer transitions 26/97 dead transitions. [2021-06-13 07:32:20,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 491 flow [2021-06-13 07:32:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:32:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:32:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 703 transitions. [2021-06-13 07:32:20,030 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8573170731707317 [2021-06-13 07:32:20,031 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 703 transitions. [2021-06-13 07:32:20,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 703 transitions. [2021-06-13 07:32:20,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:20,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 703 transitions. [2021-06-13 07:32:20,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.3) internal successors, (703), 10 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,034 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,034 INFO L185 Difference]: Start difference. First operand has 101 places, 69 transitions, 220 flow. Second operand 10 states and 703 transitions. [2021-06-13 07:32:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 491 flow [2021-06-13 07:32:20,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 439 flow, removed 17 selfloop flow, removed 8 redundant places. [2021-06-13 07:32:20,039 INFO L241 Difference]: Finished difference. Result has 101 places, 69 transitions, 224 flow [2021-06-13 07:32:20,039 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=224, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2021-06-13 07:32:20,039 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2021-06-13 07:32:20,039 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 224 flow [2021-06-13 07:32:20,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,040 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:20,040 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:20,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:32:20,040 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:20,040 INFO L82 PathProgramCache]: Analyzing trace with hash 952537848, now seen corresponding path program 1 times [2021-06-13 07:32:20,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:20,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025419896] [2021-06-13 07:32:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:20,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:20,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:20,084 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:32:20,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:32:20,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:32:20,104 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:32:20,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:20,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:20,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:20,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025419896] [2021-06-13 07:32:20,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025419896] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:20,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:20,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:32:20,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461545455] [2021-06-13 07:32:20,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:32:20,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:32:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:32:20,114 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:32:20,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:20,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:32:20,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:20,257 INFO L129 PetriNetUnfolder]: 282/707 cut-off events. [2021-06-13 07:32:20,258 INFO L130 PetriNetUnfolder]: For 778/797 co-relation queries the response was YES. [2021-06-13 07:32:20,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 707 events. 282/707 cut-off events. For 778/797 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4462 event pairs, 23 based on Foata normal form. 3/642 useless extension candidates. Maximal degree in co-relation 1587. Up to 187 conditions per place. [2021-06-13 07:32:20,263 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 21 selfloop transitions, 15 changer transitions 5/99 dead transitions. [2021-06-13 07:32:20,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 99 transitions, 366 flow [2021-06-13 07:32:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:32:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:32:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-06-13 07:32:20,267 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-06-13 07:32:20,267 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-06-13 07:32:20,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-06-13 07:32:20,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:20,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-06-13 07:32:20,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,270 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,270 INFO L185 Difference]: Start difference. First operand has 101 places, 69 transitions, 224 flow. Second operand 10 states and 723 transitions. [2021-06-13 07:32:20,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 99 transitions, 366 flow [2021-06-13 07:32:20,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 99 transitions, 340 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-06-13 07:32:20,276 INFO L241 Difference]: Finished difference. Result has 100 places, 82 transitions, 307 flow [2021-06-13 07:32:20,276 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=307, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2021-06-13 07:32:20,276 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 24 predicate places. [2021-06-13 07:32:20,276 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 307 flow [2021-06-13 07:32:20,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,277 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:20,277 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:20,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:32:20,277 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:20,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:20,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1688726990, now seen corresponding path program 1 times [2021-06-13 07:32:20,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:20,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608623605] [2021-06-13 07:32:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:20,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:20,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:20,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:20,362 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:32:20,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:32:20,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:32:20,381 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:32:20,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:20,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:20,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:20,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608623605] [2021-06-13 07:32:20,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608623605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:20,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:20,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:32:20,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017972608] [2021-06-13 07:32:20,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:32:20,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:32:20,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:32:20,390 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:32:20,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 307 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:20,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:32:20,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:20,590 INFO L129 PetriNetUnfolder]: 253/661 cut-off events. [2021-06-13 07:32:20,590 INFO L130 PetriNetUnfolder]: For 1642/1962 co-relation queries the response was YES. [2021-06-13 07:32:20,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 661 events. 253/661 cut-off events. For 1642/1962 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4272 event pairs, 3 based on Foata normal form. 63/680 useless extension candidates. Maximal degree in co-relation 2272. Up to 275 conditions per place. [2021-06-13 07:32:20,595 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 20 selfloop transitions, 28 changer transitions 11/117 dead transitions. [2021-06-13 07:32:20,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 117 transitions, 649 flow [2021-06-13 07:32:20,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:32:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:32:20,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 939 transitions. [2021-06-13 07:32:20,597 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8808630393996247 [2021-06-13 07:32:20,597 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 939 transitions. [2021-06-13 07:32:20,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 939 transitions. [2021-06-13 07:32:20,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:20,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 939 transitions. [2021-06-13 07:32:20,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,600 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,601 INFO L185 Difference]: Start difference. First operand has 100 places, 82 transitions, 307 flow. Second operand 13 states and 939 transitions. [2021-06-13 07:32:20,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 117 transitions, 649 flow [2021-06-13 07:32:20,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 07:32:20,606 INFO L241 Difference]: Finished difference. Result has 117 places, 99 transitions, 531 flow [2021-06-13 07:32:20,606 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=531, PETRI_PLACES=117, PETRI_TRANSITIONS=99} [2021-06-13 07:32:20,606 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 41 predicate places. [2021-06-13 07:32:20,606 INFO L482 AbstractCegarLoop]: Abstraction has has 117 places, 99 transitions, 531 flow [2021-06-13 07:32:20,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,607 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:20,608 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:20,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:32:20,608 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1102791575, now seen corresponding path program 1 times [2021-06-13 07:32:20,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:20,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740389845] [2021-06-13 07:32:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:20,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:20,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:20,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:20,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:20,664 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:32:20,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:32:20,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:32:20,684 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:32:20,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:20,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:20,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:20,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:20,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740389845] [2021-06-13 07:32:20,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740389845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:20,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:20,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:32:20,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629826164] [2021-06-13 07:32:20,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:32:20,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:20,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:32:20,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:32:20,697 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:32:20,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 99 transitions, 531 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:20,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:32:20,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:20,915 INFO L129 PetriNetUnfolder]: 170/554 cut-off events. [2021-06-13 07:32:20,915 INFO L130 PetriNetUnfolder]: For 2745/3529 co-relation queries the response was YES. [2021-06-13 07:32:20,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2415 conditions, 554 events. 170/554 cut-off events. For 2745/3529 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3932 event pairs, 0 based on Foata normal form. 78/595 useless extension candidates. Maximal degree in co-relation 2360. Up to 196 conditions per place. [2021-06-13 07:32:20,920 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 32 changer transitions 19/125 dead transitions. [2021-06-13 07:32:20,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 125 transitions, 847 flow [2021-06-13 07:32:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 07:32:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-13 07:32:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1140 transitions. [2021-06-13 07:32:20,922 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8689024390243902 [2021-06-13 07:32:20,922 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1140 transitions. [2021-06-13 07:32:20,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1140 transitions. [2021-06-13 07:32:20,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:20,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1140 transitions. [2021-06-13 07:32:20,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.25) internal successors, (1140), 16 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,927 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,927 INFO L185 Difference]: Start difference. First operand has 117 places, 99 transitions, 531 flow. Second operand 16 states and 1140 transitions. [2021-06-13 07:32:20,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 125 transitions, 847 flow [2021-06-13 07:32:20,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 125 transitions, 749 flow, removed 41 selfloop flow, removed 11 redundant places. [2021-06-13 07:32:20,938 INFO L241 Difference]: Finished difference. Result has 128 places, 100 transitions, 547 flow [2021-06-13 07:32:20,938 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=547, PETRI_PLACES=128, PETRI_TRANSITIONS=100} [2021-06-13 07:32:20,938 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2021-06-13 07:32:20,938 INFO L482 AbstractCegarLoop]: Abstraction has has 128 places, 100 transitions, 547 flow [2021-06-13 07:32:20,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:20,939 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:20,939 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:20,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:32:20,939 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:20,939 INFO L82 PathProgramCache]: Analyzing trace with hash 514381442, now seen corresponding path program 1 times [2021-06-13 07:32:20,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:20,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146572176] [2021-06-13 07:32:20,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:21,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:21,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:21,008 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:32:21,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:32:21,013 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:32:21,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:32:21,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:21,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:21,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:21,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:21,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146572176] [2021-06-13 07:32:21,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146572176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:21,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:21,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:32:21,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238564900] [2021-06-13 07:32:21,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:32:21,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:21,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:32:21,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:32:21,048 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-06-13 07:32:21,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 100 transitions, 547 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:21,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-06-13 07:32:21,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:21,125 INFO L129 PetriNetUnfolder]: 110/571 cut-off events. [2021-06-13 07:32:21,125 INFO L130 PetriNetUnfolder]: For 1763/1828 co-relation queries the response was YES. [2021-06-13 07:32:21,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 571 events. 110/571 cut-off events. For 1763/1828 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4544 event pairs, 1 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 1872. Up to 89 conditions per place. [2021-06-13 07:32:21,128 INFO L132 encePairwiseOnDemand]: 74/82 looper letters, 9 selfloop transitions, 4 changer transitions 35/106 dead transitions. [2021-06-13 07:32:21,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 106 transitions, 608 flow [2021-06-13 07:32:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:32:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:32:21,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 477 transitions. [2021-06-13 07:32:21,129 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8310104529616724 [2021-06-13 07:32:21,129 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 477 transitions. [2021-06-13 07:32:21,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 477 transitions. [2021-06-13 07:32:21,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:21,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 477 transitions. [2021-06-13 07:32:21,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,131 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,131 INFO L185 Difference]: Start difference. First operand has 128 places, 100 transitions, 547 flow. Second operand 7 states and 477 transitions. [2021-06-13 07:32:21,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 106 transitions, 608 flow [2021-06-13 07:32:21,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 106 transitions, 511 flow, removed 15 selfloop flow, removed 15 redundant places. [2021-06-13 07:32:21,140 INFO L241 Difference]: Finished difference. Result has 120 places, 71 transitions, 260 flow [2021-06-13 07:32:21,140 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=120, PETRI_TRANSITIONS=71} [2021-06-13 07:32:21,140 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 44 predicate places. [2021-06-13 07:32:21,140 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 71 transitions, 260 flow [2021-06-13 07:32:21,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,141 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:32:21,141 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:32:21,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:32:21,141 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:32:21,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:32:21,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1614286568, now seen corresponding path program 2 times [2021-06-13 07:32:21,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:32:21,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159041874] [2021-06-13 07:32:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:32:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:32:21,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:21,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:32:21,173 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:32:21,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:32:21,179 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:32:21,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:32:21,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:21,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:32:21,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:32:21,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:32:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:32:21,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:32:21,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159041874] [2021-06-13 07:32:21,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159041874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:32:21,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:32:21,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:32:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579212049] [2021-06-13 07:32:21,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:32:21,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:32:21,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:32:21,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:32:21,206 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-06-13 07:32:21,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 71 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:32:21,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-06-13 07:32:21,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:32:21,265 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-06-13 07:32:21,266 INFO L130 PetriNetUnfolder]: For 56/57 co-relation queries the response was YES. [2021-06-13 07:32:21,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 80 events. 5/80 cut-off events. For 56/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 160. Up to 8 conditions per place. [2021-06-13 07:32:21,269 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-06-13 07:32:21,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 69 transitions, 282 flow [2021-06-13 07:32:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:32:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:32:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 519 transitions. [2021-06-13 07:32:21,270 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7911585365853658 [2021-06-13 07:32:21,270 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 519 transitions. [2021-06-13 07:32:21,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 519 transitions. [2021-06-13 07:32:21,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:32:21,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 519 transitions. [2021-06-13 07:32:21,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 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) [2021-06-13 07:32:21,272 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 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) [2021-06-13 07:32:21,272 INFO L185 Difference]: Start difference. First operand has 120 places, 71 transitions, 260 flow. Second operand 8 states and 519 transitions. [2021-06-13 07:32:21,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 69 transitions, 282 flow [2021-06-13 07:32:21,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 69 transitions, 198 flow, removed 16 selfloop flow, removed 25 redundant places. [2021-06-13 07:32:21,273 INFO L241 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2021-06-13 07:32:21,274 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2021-06-13 07:32:21,274 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 8 predicate places. [2021-06-13 07:32:21,274 INFO L482 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2021-06-13 07:32:21,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:32:21,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:32:21,276 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:32:21,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:32:21 BasicIcfg [2021-06-13 07:32:21,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:32:21,278 INFO L168 Benchmark]: Toolchain (without parser) took 3298.64 ms. Allocated memory was 175.1 MB in the beginning and 249.6 MB in the end (delta: 74.4 MB). Free memory was 138.1 MB in the beginning and 133.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2021-06-13 07:32:21,279 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 175.1 MB. Free memory is still 156.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:32:21,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.64 ms. Allocated memory is still 175.1 MB. Free memory was 137.9 MB in the beginning and 138.0 MB in the end (delta: -127.0 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-06-13 07:32:21,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.22 ms. Allocated memory is still 175.1 MB. Free memory was 138.0 MB in the beginning and 135.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:32:21,279 INFO L168 Benchmark]: Boogie Preprocessor took 14.80 ms. Allocated memory is still 175.1 MB. Free memory was 135.9 MB in the beginning and 134.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:32:21,279 INFO L168 Benchmark]: RCFGBuilder took 312.83 ms. Allocated memory is still 175.1 MB. Free memory was 134.3 MB in the beginning and 111.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:32:21,280 INFO L168 Benchmark]: TraceAbstraction took 2581.50 ms. Allocated memory was 175.1 MB in the beginning and 249.6 MB in the end (delta: 74.4 MB). Free memory was 110.7 MB in the beginning and 133.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. [2021-06-13 07:32:21,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 175.1 MB. Free memory is still 156.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.64 ms. Allocated memory is still 175.1 MB. Free memory was 137.9 MB in the beginning and 138.0 MB in the end (delta: -127.0 kB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.22 ms. Allocated memory is still 175.1 MB. Free memory was 138.0 MB in the beginning and 135.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.80 ms. Allocated memory is still 175.1 MB. Free memory was 135.9 MB in the beginning and 134.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 312.83 ms. Allocated memory is still 175.1 MB. Free memory was 134.3 MB in the beginning and 111.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2581.50 ms. Allocated memory was 175.1 MB in the beginning and 249.6 MB in the end (delta: 74.4 MB). Free memory was 110.7 MB in the beginning and 133.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 52.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 17.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2495.7ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1418.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 69.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 84 SDtfs, 244 SDslu, 288 SDs, 0 SdLazy, 343 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 228.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 749.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=547occurred in iteration=6, InterpolantAutomatonStates: 86, 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: 23.3ms SsaConstructionTime, 179.5ms SatisfiabilityAnalysisTime, 652.4ms InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 426 ConstructedInterpolants, 0 QuantifiedInterpolants, 1600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...