/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/safe006_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:28:55,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:28:55,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:28:55,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:28:55,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:28:55,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:28:55,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:28:55,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:28:55,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:28:55,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:28:55,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:28:55,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:28:55,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:28:55,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:28:55,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:28:55,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:28:55,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:28:55,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:28:55,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:28:55,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:28:55,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:28:55,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:28:55,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:28:55,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:28:55,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:28:55,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 07:28:55,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 07:28:55,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 07:28:55,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 07:28:55,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 07:28:55,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 07:28:55,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 07:28:55,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 07:28:55,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:28:55,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:28:55,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:28:55,737 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 07:28:55,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:28:55,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:28:55,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:28:55,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:28:55,768 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:28:55,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:28:55,769 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:28:55,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:28:55,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:28:55,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:28:55,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:28:55,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:28:55,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:28:55,770 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:28:55,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:28:55,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:28:55,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:28:55,770 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:28:55,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:28:55,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:28:55,772 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:28:55,772 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:28:55,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:28:55,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:28:56,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:28:56,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:28:56,010 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:28:56,011 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:28:56,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-06-13 07:28:56,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d28547a/52fed6ee46304c7582e6c49bc128e53a/FLAG93d2fdfe2 [2021-06-13 07:28:56,452 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:28:56,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc.i [2021-06-13 07:28:56,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d28547a/52fed6ee46304c7582e6c49bc128e53a/FLAG93d2fdfe2 [2021-06-13 07:28:56,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d28547a/52fed6ee46304c7582e6c49bc128e53a [2021-06-13 07:28:56,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:28:56,825 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:28:56,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:28:56,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:28:56,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:28:56,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:28:56" (1/1) ... [2021-06-13 07:28:56,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6f53c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:56, skipping insertion in model container [2021-06-13 07:28:56,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:28:56" (1/1) ... [2021-06-13 07:28:56,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:28:56,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:28:57,003 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/safe006_pso.oepc.i[950,963] [2021-06-13 07:28:57,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:28:57,150 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:28:57,158 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/safe006_pso.oepc.i[950,963] [2021-06-13 07:28:57,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:28:57,238 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:28:57,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57 WrapperNode [2021-06-13 07:28:57,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:28:57,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:28:57,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:28:57,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:28:57,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:28:57,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:28:57,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:28:57,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:28:57,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (1/1) ... [2021-06-13 07:28:57,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:28:57,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:28:57,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:28:57,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:28:57,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (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 07:28:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:28:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:28:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:28:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:28:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:28:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:28:57,391 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:28:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:28:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:28:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:28:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:28:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:28:57,393 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 07:28:57,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:28:57,647 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:28:57,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:28:57 BoogieIcfgContainer [2021-06-13 07:28:57,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:28:57,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:28:57,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:28:57,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:28:57,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:28:56" (1/3) ... [2021-06-13 07:28:57,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb0701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:28:57, skipping insertion in model container [2021-06-13 07:28:57,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:28:57" (2/3) ... [2021-06-13 07:28:57,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb0701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:28:57, skipping insertion in model container [2021-06-13 07:28:57,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:28:57" (3/3) ... [2021-06-13 07:28:57,653 INFO L111 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc.i [2021-06-13 07:28:57,657 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:28:57,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:28:57,658 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:28:57,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,673 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,674 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,675 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,677 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,692 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,692 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:28:57,694 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:28:57,708 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-13 07:28:57,723 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:28:57,723 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:28:57,723 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:28:57,723 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:28:57,723 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:28:57,723 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:28:57,723 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:28:57,723 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:28:57,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-06-13 07:28:57,756 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-06-13 07:28:57,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:57,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-06-13 07:28:57,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2021-06-13 07:28:57,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2021-06-13 07:28:57,772 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2021-06-13 07:28:57,772 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:57,772 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:57,773 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] [2021-06-13 07:28:57,773 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:57,777 INFO L82 PathProgramCache]: Analyzing trace with hash -593502858, now seen corresponding path program 1 times [2021-06-13 07:28:57,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:57,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500267839] [2021-06-13 07:28:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:58,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:58,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:58,047 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 07:28:58,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,059 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:58,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:58,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:58,136 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 07:28:58,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:58,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500267839] [2021-06-13 07:28:58,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500267839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:58,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:58,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:58,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490340484] [2021-06-13 07:28:58,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:58,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:58,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:58,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:58,153 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-06-13 07:28:58,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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 07:28:58,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:58,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-06-13 07:28:58,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:58,267 INFO L129 PetriNetUnfolder]: 20/113 cut-off events. [2021-06-13 07:28:58,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:28:58,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 113 events. 20/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 298 event pairs, 5 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 143. Up to 19 conditions per place. [2021-06-13 07:28:58,269 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 9 selfloop transitions, 2 changer transitions 16/71 dead transitions. [2021-06-13 07:28:58,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 202 flow [2021-06-13 07:28:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:28:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:28:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 508 transitions. [2021-06-13 07:28:58,279 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8424543946932007 [2021-06-13 07:28:58,279 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 508 transitions. [2021-06-13 07:28:58,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 508 transitions. [2021-06-13 07:28:58,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:58,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 508 transitions. [2021-06-13 07:28:58,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.44444444444444) internal successors, (508), 9 states have internal predecessors, (508), 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 07:28:58,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 07:28:58,293 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 07:28:58,295 INFO L185 Difference]: Start difference. First operand has 61 places, 55 transitions, 116 flow. Second operand 9 states and 508 transitions. [2021-06-13 07:28:58,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 202 flow [2021-06-13 07:28:58,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 07:28:58,299 INFO L241 Difference]: Finished difference. Result has 74 places, 54 transitions, 132 flow [2021-06-13 07:28:58,300 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=132, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2021-06-13 07:28:58,301 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 13 predicate places. [2021-06-13 07:28:58,301 INFO L482 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 132 flow [2021-06-13 07:28:58,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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 07:28:58,301 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:58,301 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] [2021-06-13 07:28:58,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:28:58,302 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash -293216521, now seen corresponding path program 1 times [2021-06-13 07:28:58,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:58,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660689714] [2021-06-13 07:28:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:58,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:58,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:58,365 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 07:28:58,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,372 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:58,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:58,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:58,404 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 07:28:58,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:58,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660689714] [2021-06-13 07:28:58,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660689714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:58,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:58,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:58,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7487035] [2021-06-13 07:28:58,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:58,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:58,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:58,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:58,407 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-06-13 07:28:58,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 132 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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 07:28:58,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:58,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-06-13 07:28:58,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:58,624 INFO L129 PetriNetUnfolder]: 16/119 cut-off events. [2021-06-13 07:28:58,624 INFO L130 PetriNetUnfolder]: For 40/51 co-relation queries the response was YES. [2021-06-13 07:28:58,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 119 events. 16/119 cut-off events. For 40/51 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 309 event pairs, 0 based on Foata normal form. 5/121 useless extension candidates. Maximal degree in co-relation 212. Up to 16 conditions per place. [2021-06-13 07:28:58,626 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 14 selfloop transitions, 4 changer transitions 25/85 dead transitions. [2021-06-13 07:28:58,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 336 flow [2021-06-13 07:28:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-13 07:28:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-13 07:28:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 914 transitions. [2021-06-13 07:28:58,629 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8024582967515365 [2021-06-13 07:28:58,629 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 914 transitions. [2021-06-13 07:28:58,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 914 transitions. [2021-06-13 07:28:58,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:58,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 914 transitions. [2021-06-13 07:28:58,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 53.76470588235294) internal successors, (914), 17 states have internal predecessors, (914), 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 07:28:58,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 07:28:58,634 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 07:28:58,634 INFO L185 Difference]: Start difference. First operand has 74 places, 54 transitions, 132 flow. Second operand 17 states and 914 transitions. [2021-06-13 07:28:58,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 336 flow [2021-06-13 07:28:58,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 272 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-06-13 07:28:58,637 INFO L241 Difference]: Finished difference. Result has 91 places, 54 transitions, 160 flow [2021-06-13 07:28:58,637 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=160, PETRI_PLACES=91, PETRI_TRANSITIONS=54} [2021-06-13 07:28:58,637 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2021-06-13 07:28:58,637 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 54 transitions, 160 flow [2021-06-13 07:28:58,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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 07:28:58,638 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:58,638 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] [2021-06-13 07:28:58,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:28:58,638 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:58,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:58,638 INFO L82 PathProgramCache]: Analyzing trace with hash 354043192, now seen corresponding path program 1 times [2021-06-13 07:28:58,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:58,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970288281] [2021-06-13 07:28:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:58,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:58,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:58,730 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-06-13 07:28:58,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,736 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:58,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:58,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:58,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:58,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:58,777 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 07:28:58,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:58,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970288281] [2021-06-13 07:28:58,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970288281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:58,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:58,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:58,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704061739] [2021-06-13 07:28:58,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:58,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:58,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:58,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:58,779 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-06-13 07:28:58,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 54 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:58,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:58,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-06-13 07:28:58,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:58,957 INFO L129 PetriNetUnfolder]: 9/101 cut-off events. [2021-06-13 07:28:58,958 INFO L130 PetriNetUnfolder]: For 139/167 co-relation queries the response was YES. [2021-06-13 07:28:58,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 101 events. 9/101 cut-off events. For 139/167 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 228 event pairs, 0 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 208. Up to 18 conditions per place. [2021-06-13 07:28:58,960 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 14 selfloop transitions, 4 changer transitions 13/73 dead transitions. [2021-06-13 07:28:58,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 73 transitions, 342 flow [2021-06-13 07:28:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-13 07:28:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-13 07:28:58,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 594 transitions. [2021-06-13 07:28:58,962 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8059701492537313 [2021-06-13 07:28:58,962 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 594 transitions. [2021-06-13 07:28:58,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 594 transitions. [2021-06-13 07:28:58,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:58,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 594 transitions. [2021-06-13 07:28:58,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 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 07:28:58,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 67.0) internal successors, (804), 12 states have internal predecessors, (804), 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 07:28:58,967 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 67.0) internal successors, (804), 12 states have internal predecessors, (804), 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 07:28:58,967 INFO L185 Difference]: Start difference. First operand has 91 places, 54 transitions, 160 flow. Second operand 11 states and 594 transitions. [2021-06-13 07:28:58,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 73 transitions, 342 flow [2021-06-13 07:28:58,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 240 flow, removed 44 selfloop flow, removed 17 redundant places. [2021-06-13 07:28:58,978 INFO L241 Difference]: Finished difference. Result has 81 places, 54 transitions, 156 flow [2021-06-13 07:28:58,978 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=156, PETRI_PLACES=81, PETRI_TRANSITIONS=54} [2021-06-13 07:28:58,978 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 20 predicate places. [2021-06-13 07:28:58,978 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 54 transitions, 156 flow [2021-06-13 07:28:58,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:28:58,979 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:58,979 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] [2021-06-13 07:28:58,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:28:58,979 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:58,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:58,979 INFO L82 PathProgramCache]: Analyzing trace with hash -635467116, now seen corresponding path program 1 times [2021-06-13 07:28:58,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:58,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418167281] [2021-06-13 07:28:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:59,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:59,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:59,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:59,035 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:59,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:59,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:59,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:59,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:59,091 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 07:28:59,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:59,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418167281] [2021-06-13 07:28:59,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418167281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:59,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:59,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:59,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397020057] [2021-06-13 07:28:59,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:59,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:59,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:59,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:59,093 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-06-13 07:28:59,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 54 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 07:28:59,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:59,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-06-13 07:28:59,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:59,205 INFO L129 PetriNetUnfolder]: 4/76 cut-off events. [2021-06-13 07:28:59,205 INFO L130 PetriNetUnfolder]: For 58/73 co-relation queries the response was YES. [2021-06-13 07:28:59,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 76 events. 4/76 cut-off events. For 58/73 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 2/76 useless extension candidates. Maximal degree in co-relation 150. Up to 9 conditions per place. [2021-06-13 07:28:59,207 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 6 selfloop transitions, 4 changer transitions 13/66 dead transitions. [2021-06-13 07:28:59,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 266 flow [2021-06-13 07:28:59,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:28:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:28:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 554 transitions. [2021-06-13 07:28:59,209 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.826865671641791 [2021-06-13 07:28:59,209 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 554 transitions. [2021-06-13 07:28:59,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 554 transitions. [2021-06-13 07:28:59,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:59,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 554 transitions. [2021-06-13 07:28:59,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 55.4) internal successors, (554), 10 states have internal predecessors, (554), 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 07:28:59,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 07:28:59,212 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 07:28:59,212 INFO L185 Difference]: Start difference. First operand has 81 places, 54 transitions, 156 flow. Second operand 10 states and 554 transitions. [2021-06-13 07:28:59,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 266 flow [2021-06-13 07:28:59,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 211 flow, removed 20 selfloop flow, removed 12 redundant places. [2021-06-13 07:28:59,216 INFO L241 Difference]: Finished difference. Result has 80 places, 53 transitions, 156 flow [2021-06-13 07:28:59,216 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=156, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2021-06-13 07:28:59,217 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 19 predicate places. [2021-06-13 07:28:59,217 INFO L482 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 156 flow [2021-06-13 07:28:59,217 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 07:28:59,217 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:28:59,217 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] [2021-06-13 07:28:59,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:28:59,217 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:28:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:28:59,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1703076296, now seen corresponding path program 1 times [2021-06-13 07:28:59,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:28:59,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500772788] [2021-06-13 07:28:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:28:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:28:59,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:59,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:59,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:28:59,304 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:28:59,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:28:59,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:59,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:28:59,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:28:59,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:28:59,331 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 07:28:59,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:28:59,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500772788] [2021-06-13 07:28:59,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500772788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:28:59,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:28:59,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:28:59,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269188104] [2021-06-13 07:28:59,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:28:59,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:28:59,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:28:59,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:28:59,333 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-06-13 07:28:59,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 07:28:59,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:28:59,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-06-13 07:28:59,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:28:59,449 INFO L129 PetriNetUnfolder]: 4/59 cut-off events. [2021-06-13 07:28:59,449 INFO L130 PetriNetUnfolder]: For 38/41 co-relation queries the response was YES. [2021-06-13 07:28:59,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 59 events. 4/59 cut-off events. For 38/41 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2021-06-13 07:28:59,449 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2021-06-13 07:28:59,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 58 transitions, 213 flow [2021-06-13 07:28:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:28:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:28:59,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 548 transitions. [2021-06-13 07:28:59,451 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.817910447761194 [2021-06-13 07:28:59,451 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 548 transitions. [2021-06-13 07:28:59,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 548 transitions. [2021-06-13 07:28:59,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:28:59,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 548 transitions. [2021-06-13 07:28:59,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 54.8) internal successors, (548), 10 states have internal predecessors, (548), 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 07:28:59,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 07:28:59,453 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 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 07:28:59,453 INFO L185 Difference]: Start difference. First operand has 80 places, 53 transitions, 156 flow. Second operand 10 states and 548 transitions. [2021-06-13 07:28:59,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 58 transitions, 213 flow [2021-06-13 07:28:59,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 58 transitions, 162 flow, removed 16 selfloop flow, removed 11 redundant places. [2021-06-13 07:28:59,455 INFO L241 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2021-06-13 07:28:59,455 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2021-06-13 07:28:59,455 INFO L335 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2021-06-13 07:28:59,455 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2021-06-13 07:28:59,455 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 07:28:59,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:28:59,457 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:28:59,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:28:59 BasicIcfg [2021-06-13 07:28:59,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:28:59,459 INFO L168 Benchmark]: Toolchain (without parser) took 2633.58 ms. Allocated memory is still 192.9 MB. Free memory was 155.2 MB in the beginning and 77.6 MB in the end (delta: 77.6 MB). Peak memory consumption was 78.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:59,459 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 192.9 MB. Free memory is still 173.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:28:59,460 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.51 ms. Allocated memory is still 192.9 MB. Free memory was 154.9 MB in the beginning and 153.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:59,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.86 ms. Allocated memory is still 192.9 MB. Free memory was 153.7 MB in the beginning and 152.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:59,460 INFO L168 Benchmark]: Boogie Preprocessor took 29.74 ms. Allocated memory is still 192.9 MB. Free memory was 152.0 MB in the beginning and 150.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:59,460 INFO L168 Benchmark]: RCFGBuilder took 333.19 ms. Allocated memory is still 192.9 MB. Free memory was 150.6 MB in the beginning and 129.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:59,461 INFO L168 Benchmark]: TraceAbstraction took 1809.03 ms. Allocated memory is still 192.9 MB. Free memory was 128.5 MB in the beginning and 77.6 MB in the end (delta: 51.0 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. [2021-06-13 07:28:59,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 192.9 MB. Free memory is still 173.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 412.51 ms. Allocated memory is still 192.9 MB. Free memory was 154.9 MB in the beginning and 153.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.86 ms. Allocated memory is still 192.9 MB. Free memory was 153.7 MB in the beginning and 152.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.74 ms. Allocated memory is still 192.9 MB. Free memory was 152.0 MB in the beginning and 150.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 333.19 ms. Allocated memory is still 192.9 MB. Free memory was 150.6 MB in the beginning and 129.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1809.03 ms. Allocated memory is still 192.9 MB. Free memory was 128.5 MB in the beginning and 77.6 MB in the end (delta: 51.0 MB). Peak memory consumption was 52.6 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 5 procedures, 82 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1737.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 832.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 142 SDslu, 209 SDs, 0 SdLazy, 174 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 113.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 714.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=160occurred in iteration=2, InterpolantAutomatonStates: 57, 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: 14.9ms SsaConstructionTime, 139.2ms SatisfiabilityAnalysisTime, 564.6ms InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...