/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:27:09,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:27:09,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:27:09,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:27:09,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:27:09,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:27:09,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:27:09,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:27:09,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:27:09,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:27:09,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:27:09,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:27:09,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:27:09,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:27:09,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:27:09,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:27:09,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:27:09,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:27:09,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:27:09,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:27:09,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:27:09,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:27:09,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:27:09,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:27:09,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:27:09,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:27:09,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:27:09,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:27:09,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:27:09,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:27:09,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:27:09,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:27:09,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:27:09,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:27:09,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:27:09,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:27:09,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:27:09,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:27:09,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:27:09,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:27:09,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:27:09,653 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 [2021-06-10 12:27:09,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:27:09,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:27:09,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:27:09,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:27:09,682 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:27:09,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:27:09,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:27:09,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:27:09,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:27:09,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:27:09,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:27:09,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:27:09,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:27:09,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:27:09,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:27:09,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:27:09,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:27:09,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:27:09,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:27:09,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:27:09,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:27:09,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:27:09,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:27:09,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:27:09,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:27:09,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:27:09,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:27:09,940 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:27:09,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-06-10 12:27:09,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27ee2a91/c6ad05c54874451987b982586f86d0cc/FLAGf9114e323 [2021-06-10 12:27:10,420 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:27:10,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i [2021-06-10 12:27:10,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27ee2a91/c6ad05c54874451987b982586f86d0cc/FLAGf9114e323 [2021-06-10 12:27:10,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27ee2a91/c6ad05c54874451987b982586f86d0cc [2021-06-10 12:27:10,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:27:10,445 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:27:10,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:10,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:27:10,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:27:10,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423bce25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10, skipping insertion in model container [2021-06-10 12:27:10,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:27:10,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:27:10,638 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i[949,962] [2021-06-10 12:27:10,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:10,758 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:27:10,764 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.opt.i[949,962] [2021-06-10 12:27:10,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:27:10,822 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:27:10,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10 WrapperNode [2021-06-10 12:27:10,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:27:10,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:10,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:27:10,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:27:10,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:27:10,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:27:10,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:27:10,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:27:10,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (1/1) ... [2021-06-10 12:27:10,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:27:10,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:27:10,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:27:10,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:27:10,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (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 [2021-06-10 12:27:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:27:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:27:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:27:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:27:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:27:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:27:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:27:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:27:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:27:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:27:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:27:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:27:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:27:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:27:10,937 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:27:11,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:27:11,204 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:27:11,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:11 BoogieIcfgContainer [2021-06-10 12:27:11,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:27:11,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:27:11,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:27:11,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:27:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:27:10" (1/3) ... [2021-06-10 12:27:11,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eade539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:11, skipping insertion in model container [2021-06-10 12:27:11,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:27:10" (2/3) ... [2021-06-10 12:27:11,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eade539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:27:11, skipping insertion in model container [2021-06-10 12:27:11,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:27:11" (3/3) ... [2021-06-10 12:27:11,212 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_pso.opt.i [2021-06-10 12:27:11,217 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:27:11,220 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:27:11,221 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:27:11,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,247 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,247 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,248 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,248 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,248 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,249 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,249 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,250 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,250 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,251 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,251 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,251 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,251 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,252 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,252 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,252 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,253 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,254 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,255 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,255 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,255 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,261 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,262 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,262 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,264 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,264 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:27:11,268 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:27:11,281 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-10 12:27:11,302 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:27:11,303 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:27:11,303 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:27:11,303 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:27:11,303 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:27:11,303 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:27:11,303 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:27:11,303 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:27:11,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:27:11,348 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-06-10 12:27:11,348 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:11,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-06-10 12:27:11,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 74 transitions, 163 flow [2021-06-10 12:27:11,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2021-06-10 12:27:11,381 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-06-10 12:27:11,382 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:11,382 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:11,382 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:11,383 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:11,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1063022328, now seen corresponding path program 1 times [2021-06-10 12:27:11,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:11,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703490001] [2021-06-10 12:27:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:11,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:11,641 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:11,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:11,654 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:11,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:11,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:11,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:11,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:11,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703490001] [2021-06-10 12:27:11,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:11,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:11,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147680173] [2021-06-10 12:27:11,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:11,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:11,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:11,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:11,731 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 74 [2021-06-10 12:27:11,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 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) [2021-06-10 12:27:11,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:11,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 74 [2021-06-10 12:27:11,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:11,893 INFO L129 PetriNetUnfolder]: 46/172 cut-off events. [2021-06-10 12:27:11,893 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:27:11,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 172 events. 46/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 621 event pairs, 21 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 251. Up to 47 conditions per place. [2021-06-10 12:27:11,895 INFO L132 encePairwiseOnDemand]: 67/74 looper letters, 11 selfloop transitions, 2 changer transitions 19/78 dead transitions. [2021-06-10 12:27:11,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 229 flow [2021-06-10 12:27:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:27:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:27:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2021-06-10 12:27:11,913 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8378378378378378 [2021-06-10 12:27:11,913 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2021-06-10 12:27:11,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2021-06-10 12:27:11,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:11,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2021-06-10 12:27:11,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 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) [2021-06-10 12:27:11,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:11,934 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:11,935 INFO L185 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 9 states and 558 transitions. [2021-06-10 12:27:11,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 229 flow [2021-06-10 12:27:11,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 78 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 12:27:11,946 INFO L241 Difference]: Finished difference. Result has 80 places, 58 transitions, 142 flow [2021-06-10 12:27:11,948 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2021-06-10 12:27:11,948 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2021-06-10 12:27:11,948 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 142 flow [2021-06-10 12:27:11,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.285714285714285) internal successors, (415), 7 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) [2021-06-10 12:27:11,949 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:11,949 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:11,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:27:11,949 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:11,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1010419335, now seen corresponding path program 1 times [2021-06-10 12:27:11,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:11,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024930728] [2021-06-10 12:27:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,045 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:12,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:12,051 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:12,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:12,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024930728] [2021-06-10 12:27:12,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:12,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030367242] [2021-06-10 12:27:12,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:12,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:12,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:12,082 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:12,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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) [2021-06-10 12:27:12,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:12,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,359 INFO L129 PetriNetUnfolder]: 65/243 cut-off events. [2021-06-10 12:27:12,360 INFO L130 PetriNetUnfolder]: For 83/97 co-relation queries the response was YES. [2021-06-10 12:27:12,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 243 events. 65/243 cut-off events. For 83/97 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1020 event pairs, 5 based on Foata normal form. 8/245 useless extension candidates. Maximal degree in co-relation 435. Up to 35 conditions per place. [2021-06-10 12:27:12,365 INFO L132 encePairwiseOnDemand]: 62/74 looper letters, 16 selfloop transitions, 10 changer transitions 38/108 dead transitions. [2021-06-10 12:27:12,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 108 transitions, 426 flow [2021-06-10 12:27:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-10 12:27:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-06-10 12:27:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1020 transitions. [2021-06-10 12:27:12,372 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8108108108108109 [2021-06-10 12:27:12,372 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1020 transitions. [2021-06-10 12:27:12,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1020 transitions. [2021-06-10 12:27:12,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1020 transitions. [2021-06-10 12:27:12,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 60.0) internal successors, (1020), 17 states have internal predecessors, (1020), 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) [2021-06-10 12:27:12,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2021-06-10 12:27:12,382 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 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) [2021-06-10 12:27:12,382 INFO L185 Difference]: Start difference. First operand has 80 places, 58 transitions, 142 flow. Second operand 17 states and 1020 transitions. [2021-06-10 12:27:12,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 108 transitions, 426 flow [2021-06-10 12:27:12,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 362 flow, removed 28 selfloop flow, removed 8 redundant places. [2021-06-10 12:27:12,388 INFO L241 Difference]: Finished difference. Result has 97 places, 63 transitions, 226 flow [2021-06-10 12:27:12,388 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=226, PETRI_PLACES=97, PETRI_TRANSITIONS=63} [2021-06-10 12:27:12,389 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2021-06-10 12:27:12,389 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 63 transitions, 226 flow [2021-06-10 12:27:12,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 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) [2021-06-10 12:27:12,390 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:27:12,390 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash 326282953, now seen corresponding path program 1 times [2021-06-10 12:27:12,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480542443] [2021-06-10 12:27:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,461 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:12,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:12,468 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:12,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:12,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480542443] [2021-06-10 12:27:12,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:12,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523038294] [2021-06-10 12:27:12,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:12,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:12,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:12,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 74 [2021-06-10 12:27:12,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 63 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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) [2021-06-10 12:27:12,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 74 [2021-06-10 12:27:12,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,595 INFO L129 PetriNetUnfolder]: 12/103 cut-off events. [2021-06-10 12:27:12,595 INFO L130 PetriNetUnfolder]: For 305/341 co-relation queries the response was YES. [2021-06-10 12:27:12,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 103 events. 12/103 cut-off events. For 305/341 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 233 event pairs, 0 based on Foata normal form. 2/102 useless extension candidates. Maximal degree in co-relation 275. Up to 25 conditions per place. [2021-06-10 12:27:12,596 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 13 selfloop transitions, 5 changer transitions 10/75 dead transitions. [2021-06-10 12:27:12,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 75 transitions, 375 flow [2021-06-10 12:27:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 606 transitions. [2021-06-10 12:27:12,607 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8189189189189189 [2021-06-10 12:27:12,607 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 606 transitions. [2021-06-10 12:27:12,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 606 transitions. [2021-06-10 12:27:12,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 606 transitions. [2021-06-10 12:27:12,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 60.6) internal successors, (606), 10 states have internal predecessors, (606), 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) [2021-06-10 12:27:12,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,610 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,610 INFO L185 Difference]: Start difference. First operand has 97 places, 63 transitions, 226 flow. Second operand 10 states and 606 transitions. [2021-06-10 12:27:12,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 75 transitions, 375 flow [2021-06-10 12:27:12,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 75 transitions, 314 flow, removed 28 selfloop flow, removed 10 redundant places. [2021-06-10 12:27:12,613 INFO L241 Difference]: Finished difference. Result has 91 places, 63 transitions, 222 flow [2021-06-10 12:27:12,613 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=222, PETRI_PLACES=91, PETRI_TRANSITIONS=63} [2021-06-10 12:27:12,613 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2021-06-10 12:27:12,613 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 63 transitions, 222 flow [2021-06-10 12:27:12,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 59.57142857142857) internal successors, (417), 7 states have internal predecessors, (417), 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) [2021-06-10 12:27:12,613 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,613 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:27:12,614 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1242017434, now seen corresponding path program 1 times [2021-06-10 12:27:12,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982284180] [2021-06-10 12:27:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,666 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:12,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:12,675 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:12,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:12,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982284180] [2021-06-10 12:27:12,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:12,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902897946] [2021-06-10 12:27:12,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:12,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:12,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:12,711 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:12,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 63 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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) [2021-06-10 12:27:12,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:12,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:12,820 INFO L129 PetriNetUnfolder]: 25/128 cut-off events. [2021-06-10 12:27:12,820 INFO L130 PetriNetUnfolder]: For 340/450 co-relation queries the response was YES. [2021-06-10 12:27:12,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 128 events. 25/128 cut-off events. For 340/450 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 323 event pairs, 5 based on Foata normal form. 4/127 useless extension candidates. Maximal degree in co-relation 375. Up to 29 conditions per place. [2021-06-10 12:27:12,821 INFO L132 encePairwiseOnDemand]: 66/74 looper letters, 10 selfloop transitions, 4 changer transitions 26/83 dead transitions. [2021-06-10 12:27:12,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 83 transitions, 469 flow [2021-06-10 12:27:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 596 transitions. [2021-06-10 12:27:12,823 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8054054054054054 [2021-06-10 12:27:12,823 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 596 transitions. [2021-06-10 12:27:12,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 596 transitions. [2021-06-10 12:27:12,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:12,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 596 transitions. [2021-06-10 12:27:12,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.6) internal successors, (596), 10 states have internal predecessors, (596), 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) [2021-06-10 12:27:12,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,825 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:12,826 INFO L185 Difference]: Start difference. First operand has 91 places, 63 transitions, 222 flow. Second operand 10 states and 596 transitions. [2021-06-10 12:27:12,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 83 transitions, 469 flow [2021-06-10 12:27:12,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 427 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-06-10 12:27:12,829 INFO L241 Difference]: Finished difference. Result has 93 places, 57 transitions, 196 flow [2021-06-10 12:27:12,829 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=93, PETRI_TRANSITIONS=57} [2021-06-10 12:27:12,829 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 25 predicate places. [2021-06-10 12:27:12,829 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 57 transitions, 196 flow [2021-06-10 12:27:12,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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) [2021-06-10 12:27:12,830 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:12,830 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:12,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:27:12,830 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:12,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2142793635, now seen corresponding path program 1 times [2021-06-10 12:27:12,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:12,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518834519] [2021-06-10 12:27:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:12,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:12,892 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:12,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:12,900 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:12,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:12,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:12,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:12,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:12,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518834519] [2021-06-10 12:27:12,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:12,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:12,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359292921] [2021-06-10 12:27:12,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:12,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:12,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:12,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:12,938 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:12,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 57 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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) [2021-06-10 12:27:12,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:12,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:12,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:13,066 INFO L129 PetriNetUnfolder]: 23/127 cut-off events. [2021-06-10 12:27:13,066 INFO L130 PetriNetUnfolder]: For 358/380 co-relation queries the response was YES. [2021-06-10 12:27:13,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 127 events. 23/127 cut-off events. For 358/380 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 367 event pairs, 5 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 368. Up to 25 conditions per place. [2021-06-10 12:27:13,067 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 8 selfloop transitions, 6 changer transitions 22/79 dead transitions. [2021-06-10 12:27:13,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 457 flow [2021-06-10 12:27:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:27:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:27:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 654 transitions. [2021-06-10 12:27:13,074 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8034398034398035 [2021-06-10 12:27:13,074 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 654 transitions. [2021-06-10 12:27:13,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 654 transitions. [2021-06-10 12:27:13,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:13,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 654 transitions. [2021-06-10 12:27:13,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.45454545454545) internal successors, (654), 11 states have internal predecessors, (654), 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) [2021-06-10 12:27:13,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:13,077 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:13,077 INFO L185 Difference]: Start difference. First operand has 93 places, 57 transitions, 196 flow. Second operand 11 states and 654 transitions. [2021-06-10 12:27:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 457 flow [2021-06-10 12:27:13,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 375 flow, removed 26 selfloop flow, removed 15 redundant places. [2021-06-10 12:27:13,082 INFO L241 Difference]: Finished difference. Result has 89 places, 57 transitions, 188 flow [2021-06-10 12:27:13,082 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=188, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2021-06-10 12:27:13,083 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-06-10 12:27:13,083 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 188 flow [2021-06-10 12:27:13,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.5) internal successors, (460), 8 states have internal predecessors, (460), 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) [2021-06-10 12:27:13,083 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:13,083 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:13,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:27:13,083 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash 306398858, now seen corresponding path program 1 times [2021-06-10 12:27:13,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:13,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050006888] [2021-06-10 12:27:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:13,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:13,143 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:13,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:13,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:13,161 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:13,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:13,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:13,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050006888] [2021-06-10 12:27:13,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:13,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:27:13,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360813887] [2021-06-10 12:27:13,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:27:13,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:13,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:27:13,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:27:13,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:27:13,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 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) [2021-06-10 12:27:13,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:13,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:27:13,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:13,267 INFO L129 PetriNetUnfolder]: 106/341 cut-off events. [2021-06-10 12:27:13,267 INFO L130 PetriNetUnfolder]: For 320/326 co-relation queries the response was YES. [2021-06-10 12:27:13,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 341 events. 106/341 cut-off events. For 320/326 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1783 event pairs, 39 based on Foata normal form. 8/335 useless extension candidates. Maximal degree in co-relation 705. Up to 84 conditions per place. [2021-06-10 12:27:13,269 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 10 selfloop transitions, 6 changer transitions 19/82 dead transitions. [2021-06-10 12:27:13,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 308 flow [2021-06-10 12:27:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:27:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:27:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 577 transitions. [2021-06-10 12:27:13,271 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8663663663663663 [2021-06-10 12:27:13,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 577 transitions. [2021-06-10 12:27:13,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 577 transitions. [2021-06-10 12:27:13,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:13,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 577 transitions. [2021-06-10 12:27:13,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.11111111111111) internal successors, (577), 9 states have internal predecessors, (577), 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) [2021-06-10 12:27:13,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:13,273 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 74.0) internal successors, (740), 10 states have internal predecessors, (740), 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) [2021-06-10 12:27:13,273 INFO L185 Difference]: Start difference. First operand has 89 places, 57 transitions, 188 flow. Second operand 9 states and 577 transitions. [2021-06-10 12:27:13,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 308 flow [2021-06-10 12:27:13,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 82 transitions, 278 flow, removed 8 selfloop flow, removed 11 redundant places. [2021-06-10 12:27:13,275 INFO L241 Difference]: Finished difference. Result has 86 places, 60 transitions, 214 flow [2021-06-10 12:27:13,276 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=214, PETRI_PLACES=86, PETRI_TRANSITIONS=60} [2021-06-10 12:27:13,276 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2021-06-10 12:27:13,276 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 60 transitions, 214 flow [2021-06-10 12:27:13,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 61.166666666666664) internal successors, (367), 6 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) [2021-06-10 12:27:13,276 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:13,276 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:13,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:27:13,276 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:13,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:13,276 INFO L82 PathProgramCache]: Analyzing trace with hash 246595460, now seen corresponding path program 1 times [2021-06-10 12:27:13,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:13,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973676] [2021-06-10 12:27:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:13,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:13,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:13,323 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:13,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:13,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:13,342 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:13,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:13,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:13,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973676] [2021-06-10 12:27:13,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:13,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:13,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162082926] [2021-06-10 12:27:13,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:13,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:13,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:13,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:13,353 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:27:13,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 60 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:13,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:13,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:27:13,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:13,500 INFO L129 PetriNetUnfolder]: 57/221 cut-off events. [2021-06-10 12:27:13,500 INFO L130 PetriNetUnfolder]: For 327/377 co-relation queries the response was YES. [2021-06-10 12:27:13,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 221 events. 57/221 cut-off events. For 327/377 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 900 event pairs, 4 based on Foata normal form. 14/230 useless extension candidates. Maximal degree in co-relation 627. Up to 76 conditions per place. [2021-06-10 12:27:13,502 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 10 selfloop transitions, 9 changer transitions 19/85 dead transitions. [2021-06-10 12:27:13,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 467 flow [2021-06-10 12:27:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:27:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:27:13,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 640 transitions. [2021-06-10 12:27:13,504 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8648648648648649 [2021-06-10 12:27:13,504 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 640 transitions. [2021-06-10 12:27:13,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 640 transitions. [2021-06-10 12:27:13,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:13,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 640 transitions. [2021-06-10 12:27:13,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2021-06-10 12:27:13,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:13,506 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2021-06-10 12:27:13,507 INFO L185 Difference]: Start difference. First operand has 86 places, 60 transitions, 214 flow. Second operand 10 states and 640 transitions. [2021-06-10 12:27:13,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 467 flow [2021-06-10 12:27:13,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 443 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 12:27:13,509 INFO L241 Difference]: Finished difference. Result has 92 places, 63 transitions, 282 flow [2021-06-10 12:27:13,509 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=282, PETRI_PLACES=92, PETRI_TRANSITIONS=63} [2021-06-10 12:27:13,509 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 24 predicate places. [2021-06-10 12:27:13,509 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 63 transitions, 282 flow [2021-06-10 12:27:13,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 61.142857142857146) internal successors, (428), 7 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:27:13,510 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:13,510 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:13,510 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:27:13,510 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:13,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:13,510 INFO L82 PathProgramCache]: Analyzing trace with hash 2039546738, now seen corresponding path program 1 times [2021-06-10 12:27:13,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:13,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554939812] [2021-06-10 12:27:13,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:13,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:13,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:13,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:13,544 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:27:13,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:27:13,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:27:13,566 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:27:13,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:13,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:13,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554939812] [2021-06-10 12:27:13,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:13,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:27:13,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501566784] [2021-06-10 12:27:13,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:27:13,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:13,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:27:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:27:13,576 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 74 [2021-06-10 12:27:13,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 63 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 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) [2021-06-10 12:27:13,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:13,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 74 [2021-06-10 12:27:13,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:13,699 INFO L129 PetriNetUnfolder]: 16/103 cut-off events. [2021-06-10 12:27:13,699 INFO L130 PetriNetUnfolder]: For 409/458 co-relation queries the response was YES. [2021-06-10 12:27:13,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 103 events. 16/103 cut-off events. For 409/458 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 0 based on Foata normal form. 14/116 useless extension candidates. Maximal degree in co-relation 330. Up to 30 conditions per place. [2021-06-10 12:27:13,700 INFO L132 encePairwiseOnDemand]: 65/74 looper letters, 4 selfloop transitions, 12 changer transitions 13/76 dead transitions. [2021-06-10 12:27:13,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 76 transitions, 466 flow [2021-06-10 12:27:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:27:13,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:27:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 691 transitions. [2021-06-10 12:27:13,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8488943488943489 [2021-06-10 12:27:13,702 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 691 transitions. [2021-06-10 12:27:13,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 691 transitions. [2021-06-10 12:27:13,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:13,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 691 transitions. [2021-06-10 12:27:13,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.81818181818182) internal successors, (691), 11 states have internal predecessors, (691), 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) [2021-06-10 12:27:13,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:13,705 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 74.0) internal successors, (888), 12 states have internal predecessors, (888), 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) [2021-06-10 12:27:13,705 INFO L185 Difference]: Start difference. First operand has 92 places, 63 transitions, 282 flow. Second operand 11 states and 691 transitions. [2021-06-10 12:27:13,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 76 transitions, 466 flow [2021-06-10 12:27:13,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 341 flow, removed 49 selfloop flow, removed 15 redundant places. [2021-06-10 12:27:13,707 INFO L241 Difference]: Finished difference. Result has 89 places, 63 transitions, 242 flow [2021-06-10 12:27:13,707 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=242, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2021-06-10 12:27:13,707 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2021-06-10 12:27:13,707 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 242 flow [2021-06-10 12:27:13,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 61.125) internal successors, (489), 8 states have internal predecessors, (489), 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) [2021-06-10 12:27:13,708 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:27:13,708 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:27:13,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:27:13,708 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:27:13,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:27:13,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1493209069, now seen corresponding path program 1 times [2021-06-10 12:27:13,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:27:13,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546983293] [2021-06-10 12:27:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:27:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:27:13,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:27:13,735 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-10 12:27:13,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 12:27:13,742 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:27:13,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:27:13,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:13,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:27:13,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:27:13,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:27:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:27:13,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546983293] [2021-06-10 12:27:13,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:27:13,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:27:13,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172145278] [2021-06-10 12:27:13,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:27:13,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:27:13,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:27:13,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:27:13,775 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 74 [2021-06-10 12:27:13,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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) [2021-06-10 12:27:13,775 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:27:13,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 74 [2021-06-10 12:27:13,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:27:13,842 INFO L129 PetriNetUnfolder]: 5/72 cut-off events. [2021-06-10 12:27:13,842 INFO L130 PetriNetUnfolder]: For 76/82 co-relation queries the response was YES. [2021-06-10 12:27:13,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 72 events. 5/72 cut-off events. For 76/82 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 2/73 useless extension candidates. Maximal degree in co-relation 143. Up to 11 conditions per place. [2021-06-10 12:27:13,843 INFO L132 encePairwiseOnDemand]: 64/74 looper letters, 0 selfloop transitions, 0 changer transitions 61/61 dead transitions. [2021-06-10 12:27:13,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 61 transitions, 264 flow [2021-06-10 12:27:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:27:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:27:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 462 transitions. [2021-06-10 12:27:13,844 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7804054054054054 [2021-06-10 12:27:13,844 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 462 transitions. [2021-06-10 12:27:13,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 462 transitions. [2021-06-10 12:27:13,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:27:13,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 462 transitions. [2021-06-10 12:27:13,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 57.75) internal successors, (462), 8 states have internal predecessors, (462), 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) [2021-06-10 12:27:13,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 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) [2021-06-10 12:27:13,846 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 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) [2021-06-10 12:27:13,846 INFO L185 Difference]: Start difference. First operand has 89 places, 63 transitions, 242 flow. Second operand 8 states and 462 transitions. [2021-06-10 12:27:13,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 61 transitions, 264 flow [2021-06-10 12:27:13,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 61 transitions, 182 flow, removed 22 selfloop flow, removed 15 redundant places. [2021-06-10 12:27:13,847 INFO L241 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2021-06-10 12:27:13,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2021-06-10 12:27:13,847 INFO L343 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2021-06-10 12:27:13,847 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2021-06-10 12:27:13,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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) [2021-06-10 12:27:13,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:27:13,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:27:13 BasicIcfg [2021-06-10 12:27:13,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:27:13,854 INFO L168 Benchmark]: Toolchain (without parser) took 3406.01 ms. Allocated memory was 362.8 MB in the beginning and 471.9 MB in the end (delta: 109.1 MB). Free memory was 324.9 MB in the beginning and 328.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 106.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,854 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 362.8 MB. Free memory is still 342.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:27:13,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.36 ms. Allocated memory is still 362.8 MB. Free memory was 324.6 MB in the beginning and 325.5 MB in the end (delta: -817.5 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,856 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.70 ms. Allocated memory is still 362.8 MB. Free memory was 325.5 MB in the beginning and 323.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,856 INFO L168 Benchmark]: Boogie Preprocessor took 14.21 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 322.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:27:13,856 INFO L168 Benchmark]: RCFGBuilder took 327.99 ms. Allocated memory is still 362.8 MB. Free memory was 321.3 MB in the beginning and 297.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,856 INFO L168 Benchmark]: TraceAbstraction took 2643.44 ms. Allocated memory was 362.8 MB in the beginning and 471.9 MB in the end (delta: 109.1 MB). Free memory was 297.1 MB in the beginning and 328.5 MB in the end (delta: -31.3 MB). Peak memory consumption was 79.8 MB. Max. memory is 16.0 GB. [2021-06-10 12:27:13,861 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 362.8 MB. Free memory is still 342.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 375.36 ms. Allocated memory is still 362.8 MB. Free memory was 324.6 MB in the beginning and 325.5 MB in the end (delta: -817.5 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.70 ms. Allocated memory is still 362.8 MB. Free memory was 325.5 MB in the beginning and 323.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.21 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 322.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 327.99 ms. Allocated memory is still 362.8 MB. Free memory was 321.3 MB in the beginning and 297.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2643.44 ms. Allocated memory was 362.8 MB in the beginning and 471.9 MB in the end (delta: 109.1 MB). Free memory was 297.1 MB in the beginning and 328.5 MB in the end (delta: -31.3 MB). Peak memory consumption was 79.8 MB. Max. memory is 16.0 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 CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 25.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2549.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1373.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 52.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 110 SDtfs, 245 SDslu, 366 SDs, 0 SdLazy, 384 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 245.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 945.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=7, InterpolantAutomatonStates: 95, 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: 31.6ms SsaConstructionTime, 130.5ms SatisfiabilityAnalysisTime, 792.9ms InterpolantComputationTime, 409 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 400 ConstructedInterpolants, 0 QuantifiedInterpolants, 1662 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...