/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:30:50,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:30:50,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:30:50,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:30:50,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:30:50,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:30:50,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:30:50,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:30:50,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:30:50,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:30:50,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:30:50,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:30:50,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:30:50,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:30:50,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:30:50,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:30:50,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:30:50,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:30:50,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:30:50,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:30:50,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:30:50,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:30:50,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:30:50,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:30:50,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:30:50,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:30:50,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:30:50,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:30:50,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 07:30:50,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:30:50,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:30:50,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:30:50,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:30:50,717 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:30:50,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:30:50,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:30:50,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:30:50,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:30:50,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:30:50,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:30:50,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:30:50,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:30:50,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:30:50,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:30:50,719 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:30:50,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:30:50,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:30:50,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:30:50,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:30:50,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:30:50,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:30:50,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:30:50,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:30:50,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:30:50,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:30:50,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:30:50,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:30:50,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:30:50,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:30:51,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:30:51,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:30:51,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:30:51,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:30:51,051 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:30:51,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-13 07:30:51,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b9e041b/eaf4816211614f2ca49180323bef8276/FLAG2f3dc85b7 [2021-06-13 07:30:51,659 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:30:51,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-13 07:30:51,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b9e041b/eaf4816211614f2ca49180323bef8276/FLAG2f3dc85b7 [2021-06-13 07:30:52,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b9e041b/eaf4816211614f2ca49180323bef8276 [2021-06-13 07:30:52,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:30:52,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:30:52,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:30:52,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:30:52,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:30:52,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a667ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52, skipping insertion in model container [2021-06-13 07:30:52,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:30:52,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:30:52,271 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i[949,962] [2021-06-13 07:30:52,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:30:52,437 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:30:52,446 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i[949,962] [2021-06-13 07:30:52,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:30:52,524 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:30:52,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52 WrapperNode [2021-06-13 07:30:52,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:30:52,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:30:52,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:30:52,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:30:52,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:30:52,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:30:52,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:30:52,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:30:52,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... [2021-06-13 07:30:52,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:30:52,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:30:52,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:30:52,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:30:52,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:30:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:30:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:30:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:30:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:30:52,656 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:30:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:30:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:30:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:30:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:30:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:30:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:30:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:30:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:30:52,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:30:52,659 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:30:53,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:30:53,074 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:30:53,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:30:53 BoogieIcfgContainer [2021-06-13 07:30:53,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:30:53,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:30:53,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:30:53,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:30:53,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:30:52" (1/3) ... [2021-06-13 07:30:53,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145b9672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:30:53, skipping insertion in model container [2021-06-13 07:30:53,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:30:52" (2/3) ... [2021-06-13 07:30:53,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145b9672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:30:53, skipping insertion in model container [2021-06-13 07:30:53,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:30:53" (3/3) ... [2021-06-13 07:30:53,082 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2021-06-13 07:30:53,086 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:30:53,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:30:53,087 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:30:53,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,109 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,110 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,110 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,110 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,112 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,113 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,119 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,119 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,120 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,121 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,121 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:30:53,122 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:30:53,138 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:30:53,154 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:30:53,154 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:30:53,155 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:30:53,155 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:30:53,155 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:30:53,155 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:30:53,155 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:30:53,155 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:30:53,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-06-13 07:30:53,227 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-06-13 07:30:53,227 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:30:53,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-06-13 07:30:53,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-06-13 07:30:53,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-06-13 07:30:53,269 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-06-13 07:30:53,269 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:30:53,269 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:53,270 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:53,270 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:53,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:53,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-06-13 07:30:53,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:53,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262026892] [2021-06-13 07:30:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:53,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:53,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:53,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:53,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:53,608 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:30:53,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:30:53,629 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:53,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:53,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:53,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:53,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:53,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:53,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:53,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:53,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:53,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262026892] [2021-06-13 07:30:53,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262026892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:53,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:53,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:53,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169408894] [2021-06-13 07:30:53,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:53,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:53,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:53,731 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-06-13 07:30:53,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:53,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:53,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-06-13 07:30:53,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:54,199 INFO L129 PetriNetUnfolder]: 541/1165 cut-off events. [2021-06-13 07:30:54,199 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:30:54,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 1165 events. 541/1165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6972 event pairs, 29 based on Foata normal form. 47/1174 useless extension candidates. Maximal degree in co-relation 2013. Up to 248 conditions per place. [2021-06-13 07:30:54,209 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 22 selfloop transitions, 7 changer transitions 56/136 dead transitions. [2021-06-13 07:30:54,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 136 transitions, 451 flow [2021-06-13 07:30:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:30:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:30:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 910 transitions. [2021-06-13 07:30:54,223 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8433734939759037 [2021-06-13 07:30:54,224 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 910 transitions. [2021-06-13 07:30:54,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 910 transitions. [2021-06-13 07:30:54,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:54,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 910 transitions. [2021-06-13 07:30:54,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.0) internal successors, (910), 13 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,240 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,242 INFO L185 Difference]: Start difference. First operand has 77 places, 68 transitions, 145 flow. Second operand 13 states and 910 transitions. [2021-06-13 07:30:54,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 136 transitions, 451 flow [2021-06-13 07:30:54,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 448 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:30:54,248 INFO L241 Difference]: Finished difference. Result has 98 places, 72 transitions, 240 flow [2021-06-13 07:30:54,250 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=240, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2021-06-13 07:30:54,250 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2021-06-13 07:30:54,251 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 240 flow [2021-06-13 07:30:54,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,251 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:54,251 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:54,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:30:54,252 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:54,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:54,252 INFO L82 PathProgramCache]: Analyzing trace with hash -153177928, now seen corresponding path program 1 times [2021-06-13 07:30:54,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:54,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76357968] [2021-06-13 07:30:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:54,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:54,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:54,309 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:54,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:54,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:54,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:54,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:54,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:54,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76357968] [2021-06-13 07:30:54,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76357968] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:54,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:54,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:30:54,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118594531] [2021-06-13 07:30:54,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:30:54,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:54,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:30:54,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:30:54,346 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 83 [2021-06-13 07:30:54,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 72 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:54,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 83 [2021-06-13 07:30:54,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:54,554 INFO L129 PetriNetUnfolder]: 239/634 cut-off events. [2021-06-13 07:30:54,555 INFO L130 PetriNetUnfolder]: For 1738/1919 co-relation queries the response was YES. [2021-06-13 07:30:54,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 634 events. 239/634 cut-off events. For 1738/1919 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3679 event pairs, 97 based on Foata normal form. 43/645 useless extension candidates. Maximal degree in co-relation 2147. Up to 214 conditions per place. [2021-06-13 07:30:54,562 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 10 selfloop transitions, 5 changer transitions 31/107 dead transitions. [2021-06-13 07:30:54,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 107 transitions, 598 flow [2021-06-13 07:30:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:30:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:30:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2021-06-13 07:30:54,565 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8862115127175368 [2021-06-13 07:30:54,565 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2021-06-13 07:30:54,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2021-06-13 07:30:54,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:54,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2021-06-13 07:30:54,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,569 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,569 INFO L185 Difference]: Start difference. First operand has 98 places, 72 transitions, 240 flow. Second operand 9 states and 662 transitions. [2021-06-13 07:30:54,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 107 transitions, 598 flow [2021-06-13 07:30:54,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 107 transitions, 582 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-13 07:30:54,581 INFO L241 Difference]: Finished difference. Result has 100 places, 76 transitions, 325 flow [2021-06-13 07:30:54,581 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=325, PETRI_PLACES=100, PETRI_TRANSITIONS=76} [2021-06-13 07:30:54,582 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2021-06-13 07:30:54,582 INFO L482 AbstractCegarLoop]: Abstraction has has 100 places, 76 transitions, 325 flow [2021-06-13 07:30:54,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,582 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:54,582 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:54,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:30:54,583 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1267966265, now seen corresponding path program 1 times [2021-06-13 07:30:54,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:54,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324139498] [2021-06-13 07:30:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:54,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:54,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:54,643 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:30:54,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:30:54,653 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:54,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:54,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:54,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:54,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:54,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:54,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:54,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:54,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324139498] [2021-06-13 07:30:54,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324139498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:54,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:54,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:54,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733703072] [2021-06-13 07:30:54,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:54,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:54,690 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-06-13 07:30:54,691 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 76 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,691 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:54,691 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-06-13 07:30:54,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:54,935 INFO L129 PetriNetUnfolder]: 216/620 cut-off events. [2021-06-13 07:30:54,935 INFO L130 PetriNetUnfolder]: For 3044/3632 co-relation queries the response was YES. [2021-06-13 07:30:54,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 620 events. 216/620 cut-off events. For 3044/3632 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3417 event pairs, 2 based on Foata normal form. 18/621 useless extension candidates. Maximal degree in co-relation 2464. Up to 188 conditions per place. [2021-06-13 07:30:54,941 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 27 selfloop transitions, 14 changer transitions 43/135 dead transitions. [2021-06-13 07:30:54,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 135 transitions, 1080 flow [2021-06-13 07:30:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:30:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:30:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 885 transitions. [2021-06-13 07:30:54,944 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8202038924930491 [2021-06-13 07:30:54,944 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 885 transitions. [2021-06-13 07:30:54,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 885 transitions. [2021-06-13 07:30:54,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:54,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 885 transitions. [2021-06-13 07:30:54,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.07692307692308) internal successors, (885), 13 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,949 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,949 INFO L185 Difference]: Start difference. First operand has 100 places, 76 transitions, 325 flow. Second operand 13 states and 885 transitions. [2021-06-13 07:30:54,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 135 transitions, 1080 flow [2021-06-13 07:30:54,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 1048 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-06-13 07:30:54,957 INFO L241 Difference]: Finished difference. Result has 114 places, 84 transitions, 497 flow [2021-06-13 07:30:54,958 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=497, PETRI_PLACES=114, PETRI_TRANSITIONS=84} [2021-06-13 07:30:54,958 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2021-06-13 07:30:54,958 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 84 transitions, 497 flow [2021-06-13 07:30:54,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:54,959 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:54,959 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:54,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:30:54,959 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:54,959 INFO L82 PathProgramCache]: Analyzing trace with hash -463597288, now seen corresponding path program 1 times [2021-06-13 07:30:54,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:54,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330891044] [2021-06-13 07:30:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:55,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:55,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:55,024 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:30:55,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:30:55,036 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:55,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:55,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:55,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:55,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:55,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:55,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:55,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330891044] [2021-06-13 07:30:55,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330891044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:55,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:55,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:55,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241586878] [2021-06-13 07:30:55,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:55,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:55,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:55,103 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-06-13 07:30:55,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 84 transitions, 497 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:55,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-06-13 07:30:55,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:55,353 INFO L129 PetriNetUnfolder]: 131/459 cut-off events. [2021-06-13 07:30:55,353 INFO L130 PetriNetUnfolder]: For 3583/4308 co-relation queries the response was YES. [2021-06-13 07:30:55,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 459 events. 131/459 cut-off events. For 3583/4308 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2371 event pairs, 0 based on Foata normal form. 15/463 useless extension candidates. Maximal degree in co-relation 2072. Up to 118 conditions per place. [2021-06-13 07:30:55,359 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 31 selfloop transitions, 20 changer transitions 40/142 dead transitions. [2021-06-13 07:30:55,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 142 transitions, 1416 flow [2021-06-13 07:30:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:30:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:30:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 882 transitions. [2021-06-13 07:30:55,361 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8174235403151066 [2021-06-13 07:30:55,361 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 882 transitions. [2021-06-13 07:30:55,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 882 transitions. [2021-06-13 07:30:55,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:55,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 882 transitions. [2021-06-13 07:30:55,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.84615384615384) internal successors, (882), 13 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,366 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,366 INFO L185 Difference]: Start difference. First operand has 114 places, 84 transitions, 497 flow. Second operand 13 states and 882 transitions. [2021-06-13 07:30:55,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 142 transitions, 1416 flow [2021-06-13 07:30:55,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 142 transitions, 1340 flow, removed 36 selfloop flow, removed 7 redundant places. [2021-06-13 07:30:55,380 INFO L241 Difference]: Finished difference. Result has 122 places, 94 transitions, 733 flow [2021-06-13 07:30:55,380 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=733, PETRI_PLACES=122, PETRI_TRANSITIONS=94} [2021-06-13 07:30:55,381 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2021-06-13 07:30:55,381 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 94 transitions, 733 flow [2021-06-13 07:30:55,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,381 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:55,381 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:55,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:30:55,381 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:55,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:55,382 INFO L82 PathProgramCache]: Analyzing trace with hash -198145, now seen corresponding path program 1 times [2021-06-13 07:30:55,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:55,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665221152] [2021-06-13 07:30:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:55,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:55,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:55,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:55,470 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:55,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:55,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:55,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:55,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:55,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:55,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665221152] [2021-06-13 07:30:55,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665221152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:55,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:55,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:55,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421803624] [2021-06-13 07:30:55,521 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:55,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:55,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:55,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:55,522 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-06-13 07:30:55,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 94 transitions, 733 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:55,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-06-13 07:30:55,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:55,679 INFO L129 PetriNetUnfolder]: 92/380 cut-off events. [2021-06-13 07:30:55,679 INFO L130 PetriNetUnfolder]: For 3743/4860 co-relation queries the response was YES. [2021-06-13 07:30:55,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 380 events. 92/380 cut-off events. For 3743/4860 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1956 event pairs, 14 based on Foata normal form. 13/383 useless extension candidates. Maximal degree in co-relation 1919. Up to 100 conditions per place. [2021-06-13 07:30:55,684 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 19 selfloop transitions, 6 changer transitions 19/112 dead transitions. [2021-06-13 07:30:55,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 1058 flow [2021-06-13 07:30:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:30:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:30:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 561 transitions. [2021-06-13 07:30:55,686 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8448795180722891 [2021-06-13 07:30:55,687 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 561 transitions. [2021-06-13 07:30:55,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 561 transitions. [2021-06-13 07:30:55,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:55,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 561 transitions. [2021-06-13 07:30:55,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,692 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 83.0) internal successors, (747), 9 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,692 INFO L185 Difference]: Start difference. First operand has 122 places, 94 transitions, 733 flow. Second operand 8 states and 561 transitions. [2021-06-13 07:30:55,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 1058 flow [2021-06-13 07:30:55,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 1008 flow, removed 21 selfloop flow, removed 10 redundant places. [2021-06-13 07:30:55,733 INFO L241 Difference]: Finished difference. Result has 115 places, 92 transitions, 700 flow [2021-06-13 07:30:55,733 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=115, PETRI_TRANSITIONS=92} [2021-06-13 07:30:55,733 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2021-06-13 07:30:55,734 INFO L482 AbstractCegarLoop]: Abstraction has has 115 places, 92 transitions, 700 flow [2021-06-13 07:30:55,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,735 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:55,735 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:55,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:30:55,735 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:55,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1755727225, now seen corresponding path program 2 times [2021-06-13 07:30:55,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:55,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126384530] [2021-06-13 07:30:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:55,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:55,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:55,816 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-13 07:30:55,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-13 07:30:55,826 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:55,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:55,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:55,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:55,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:55,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:55,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:55,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126384530] [2021-06-13 07:30:55,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126384530] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:55,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:55,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:55,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291076051] [2021-06-13 07:30:55,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:55,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:55,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:55,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:55,866 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 83 [2021-06-13 07:30:55,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 92 transitions, 700 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:55,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:55,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 83 [2021-06-13 07:30:55,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:56,083 INFO L129 PetriNetUnfolder]: 64/349 cut-off events. [2021-06-13 07:30:56,083 INFO L130 PetriNetUnfolder]: For 2574/3430 co-relation queries the response was YES. [2021-06-13 07:30:56,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 349 events. 64/349 cut-off events. For 2574/3430 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1807 event pairs, 0 based on Foata normal form. 12/355 useless extension candidates. Maximal degree in co-relation 1523. Up to 79 conditions per place. [2021-06-13 07:30:56,088 INFO L132 encePairwiseOnDemand]: 72/83 looper letters, 25 selfloop transitions, 25 changer transitions 22/123 dead transitions. [2021-06-13 07:30:56,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1189 flow [2021-06-13 07:30:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:30:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:30:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 875 transitions. [2021-06-13 07:30:56,090 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8109360518999074 [2021-06-13 07:30:56,090 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 875 transitions. [2021-06-13 07:30:56,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 875 transitions. [2021-06-13 07:30:56,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:56,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 875 transitions. [2021-06-13 07:30:56,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.3076923076923) internal successors, (875), 13 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,096 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,096 INFO L185 Difference]: Start difference. First operand has 115 places, 92 transitions, 700 flow. Second operand 13 states and 875 transitions. [2021-06-13 07:30:56,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1189 flow [2021-06-13 07:30:56,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 123 transitions, 1113 flow, removed 30 selfloop flow, removed 9 redundant places. [2021-06-13 07:30:56,109 INFO L241 Difference]: Finished difference. Result has 124 places, 91 transitions, 733 flow [2021-06-13 07:30:56,109 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=733, PETRI_PLACES=124, PETRI_TRANSITIONS=91} [2021-06-13 07:30:56,109 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 47 predicate places. [2021-06-13 07:30:56,110 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 91 transitions, 733 flow [2021-06-13 07:30:56,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,110 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:56,110 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:56,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:30:56,110 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:56,111 INFO L82 PathProgramCache]: Analyzing trace with hash -909928822, now seen corresponding path program 1 times [2021-06-13 07:30:56,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:56,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477106772] [2021-06-13 07:30:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:56,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:56,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:56,185 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:30:56,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:30:56,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:30:56,211 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:30:56,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:56,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:56,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:56,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477106772] [2021-06-13 07:30:56,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477106772] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:56,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:56,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:30:56,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468263728] [2021-06-13 07:30:56,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:30:56,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:56,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:30:56,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:30:56,222 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-06-13 07:30:56,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 91 transitions, 733 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:56,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-06-13 07:30:56,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:56,510 INFO L129 PetriNetUnfolder]: 660/1582 cut-off events. [2021-06-13 07:30:56,510 INFO L130 PetriNetUnfolder]: For 4087/4340 co-relation queries the response was YES. [2021-06-13 07:30:56,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 1582 events. 660/1582 cut-off events. For 4087/4340 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 12829 event pairs, 20 based on Foata normal form. 48/1465 useless extension candidates. Maximal degree in co-relation 3880. Up to 463 conditions per place. [2021-06-13 07:30:56,527 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 24 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2021-06-13 07:30:56,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 121 transitions, 875 flow [2021-06-13 07:30:56,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:30:56,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:30:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-06-13 07:30:56,529 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8831325301204819 [2021-06-13 07:30:56,529 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-06-13 07:30:56,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-06-13 07:30:56,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:56,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-06-13 07:30:56,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,533 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,533 INFO L185 Difference]: Start difference. First operand has 124 places, 91 transitions, 733 flow. Second operand 10 states and 733 transitions. [2021-06-13 07:30:56,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 121 transitions, 875 flow [2021-06-13 07:30:56,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 827 flow, removed 24 selfloop flow, removed 9 redundant places. [2021-06-13 07:30:56,545 INFO L241 Difference]: Finished difference. Result has 121 places, 106 transitions, 805 flow [2021-06-13 07:30:56,546 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=805, PETRI_PLACES=121, PETRI_TRANSITIONS=106} [2021-06-13 07:30:56,546 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2021-06-13 07:30:56,546 INFO L482 AbstractCegarLoop]: Abstraction has has 121 places, 106 transitions, 805 flow [2021-06-13 07:30:56,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,546 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:56,546 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:56,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:30:56,547 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:56,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1281146229, now seen corresponding path program 1 times [2021-06-13 07:30:56,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:56,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207962963] [2021-06-13 07:30:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:56,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:56,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:56,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:56,620 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:30:56,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:30:56,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:30:56,647 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:30:56,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:56,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:56,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:56,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207962963] [2021-06-13 07:30:56,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207962963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:56,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:56,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:56,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430263980] [2021-06-13 07:30:56,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:56,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:56,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:56,662 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-06-13 07:30:56,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 106 transitions, 805 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:56,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:56,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-06-13 07:30:56,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:57,081 INFO L129 PetriNetUnfolder]: 641/1610 cut-off events. [2021-06-13 07:30:57,081 INFO L130 PetriNetUnfolder]: For 5279/6207 co-relation queries the response was YES. [2021-06-13 07:30:57,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6102 conditions, 1610 events. 641/1610 cut-off events. For 5279/6207 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 13778 event pairs, 3 based on Foata normal form. 218/1708 useless extension candidates. Maximal degree in co-relation 6035. Up to 665 conditions per place. [2021-06-13 07:30:57,099 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 20 selfloop transitions, 32 changer transitions 9/141 dead transitions. [2021-06-13 07:30:57,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 141 transitions, 1151 flow [2021-06-13 07:30:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:30:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:30:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2021-06-13 07:30:57,102 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8841519925857275 [2021-06-13 07:30:57,102 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2021-06-13 07:30:57,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2021-06-13 07:30:57,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:57,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2021-06-13 07:30:57,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,107 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,108 INFO L185 Difference]: Start difference. First operand has 121 places, 106 transitions, 805 flow. Second operand 13 states and 954 transitions. [2021-06-13 07:30:57,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 141 transitions, 1151 flow [2021-06-13 07:30:57,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 141 transitions, 1107 flow, removed 21 selfloop flow, removed 4 redundant places. [2021-06-13 07:30:57,124 INFO L241 Difference]: Finished difference. Result has 133 places, 126 transitions, 1004 flow [2021-06-13 07:30:57,124 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1004, PETRI_PLACES=133, PETRI_TRANSITIONS=126} [2021-06-13 07:30:57,124 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 56 predicate places. [2021-06-13 07:30:57,124 INFO L482 AbstractCegarLoop]: Abstraction has has 133 places, 126 transitions, 1004 flow [2021-06-13 07:30:57,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,125 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:57,125 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:57,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:30:57,125 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1477852154, now seen corresponding path program 1 times [2021-06-13 07:30:57,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:57,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650567288] [2021-06-13 07:30:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:57,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:57,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:57,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:57,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:57,200 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:30:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:30:57,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:30:57,227 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:30:57,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:57,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:57,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:57,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650567288] [2021-06-13 07:30:57,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650567288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:57,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:57,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:30:57,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411416683] [2021-06-13 07:30:57,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:30:57,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:57,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:30:57,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:30:57,242 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-06-13 07:30:57,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 126 transitions, 1004 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:57,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-06-13 07:30:57,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:57,671 INFO L129 PetriNetUnfolder]: 514/1466 cut-off events. [2021-06-13 07:30:57,671 INFO L130 PetriNetUnfolder]: For 7045/8582 co-relation queries the response was YES. [2021-06-13 07:30:57,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6471 conditions, 1466 events. 514/1466 cut-off events. For 7045/8582 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 13291 event pairs, 0 based on Foata normal form. 230/1576 useless extension candidates. Maximal degree in co-relation 6401. Up to 525 conditions per place. [2021-06-13 07:30:57,684 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 11 selfloop transitions, 20 changer transitions 57/152 dead transitions. [2021-06-13 07:30:57,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 152 transitions, 1322 flow [2021-06-13 07:30:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 07:30:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-13 07:30:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1160 transitions. [2021-06-13 07:30:57,687 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8734939759036144 [2021-06-13 07:30:57,688 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1160 transitions. [2021-06-13 07:30:57,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1160 transitions. [2021-06-13 07:30:57,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:57,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1160 transitions. [2021-06-13 07:30:57,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,693 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,693 INFO L185 Difference]: Start difference. First operand has 133 places, 126 transitions, 1004 flow. Second operand 16 states and 1160 transitions. [2021-06-13 07:30:57,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 152 transitions, 1322 flow [2021-06-13 07:30:57,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 152 transitions, 1087 flow, removed 97 selfloop flow, removed 15 redundant places. [2021-06-13 07:30:57,748 INFO L241 Difference]: Finished difference. Result has 139 places, 92 transitions, 524 flow [2021-06-13 07:30:57,748 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=524, PETRI_PLACES=139, PETRI_TRANSITIONS=92} [2021-06-13 07:30:57,748 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 62 predicate places. [2021-06-13 07:30:57,748 INFO L482 AbstractCegarLoop]: Abstraction has has 139 places, 92 transitions, 524 flow [2021-06-13 07:30:57,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,749 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:30:57,749 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:30:57,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 07:30:57,749 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:30:57,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:30:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2104679197, now seen corresponding path program 1 times [2021-06-13 07:30:57,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:30:57,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128884662] [2021-06-13 07:30:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:30:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:30:57,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:57,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:57,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:30:57,793 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:30:57,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:30:57,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:57,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:30:57,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:30:57,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:30:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:30:57,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:30:57,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128884662] [2021-06-13 07:30:57,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128884662] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:30:57,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:30:57,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:30:57,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543299662] [2021-06-13 07:30:57,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:30:57,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:30:57,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:30:57,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:30:57,834 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-06-13 07:30:57,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 92 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:30:57,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-06-13 07:30:57,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:30:57,919 INFO L129 PetriNetUnfolder]: 28/241 cut-off events. [2021-06-13 07:30:57,919 INFO L130 PetriNetUnfolder]: For 450/468 co-relation queries the response was YES. [2021-06-13 07:30:57,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 241 events. 28/241 cut-off events. For 450/468 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1312 event pairs, 0 based on Foata normal form. 2/232 useless extension candidates. Maximal degree in co-relation 643. Up to 39 conditions per place. [2021-06-13 07:30:57,921 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2021-06-13 07:30:57,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 90 transitions, 552 flow [2021-06-13 07:30:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:30:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:30:57,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 482 transitions. [2021-06-13 07:30:57,923 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8296041308089501 [2021-06-13 07:30:57,923 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 482 transitions. [2021-06-13 07:30:57,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 482 transitions. [2021-06-13 07:30:57,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:30:57,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 482 transitions. [2021-06-13 07:30:57,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,927 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,927 INFO L185 Difference]: Start difference. First operand has 139 places, 92 transitions, 524 flow. Second operand 7 states and 482 transitions. [2021-06-13 07:30:57,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 90 transitions, 552 flow [2021-06-13 07:30:57,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 90 transitions, 451 flow, removed 16 selfloop flow, removed 21 redundant places. [2021-06-13 07:30:57,931 INFO L241 Difference]: Finished difference. Result has 114 places, 0 transitions, 0 flow [2021-06-13 07:30:57,932 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=114, PETRI_TRANSITIONS=0} [2021-06-13 07:30:57,932 INFO L335 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2021-06-13 07:30:57,932 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 0 transitions, 0 flow [2021-06-13 07:30:57,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.71428571428571) internal successors, (481), 7 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:30:57,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 07:30:57,934 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:30:57,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:30:57 BasicIcfg [2021-06-13 07:30:57,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:30:57,937 INFO L168 Benchmark]: Toolchain (without parser) took 5819.86 ms. Allocated memory was 180.4 MB in the beginning and 276.8 MB in the end (delta: 96.5 MB). Free memory was 142.7 MB in the beginning and 133.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 106.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:57,937 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 180.4 MB. Free memory is still 160.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:30:57,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.70 ms. Allocated memory is still 180.4 MB. Free memory was 142.5 MB in the beginning and 142.8 MB in the end (delta: -291.3 kB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:57,938 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 180.4 MB. Free memory was 142.8 MB in the beginning and 140.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:57,939 INFO L168 Benchmark]: Boogie Preprocessor took 17.16 ms. Allocated memory is still 180.4 MB. Free memory was 140.7 MB in the beginning and 139.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:57,940 INFO L168 Benchmark]: RCFGBuilder took 481.07 ms. Allocated memory is still 180.4 MB. Free memory was 139.1 MB in the beginning and 115.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:57,941 INFO L168 Benchmark]: TraceAbstraction took 4859.98 ms. Allocated memory was 180.4 MB in the beginning and 276.8 MB in the end (delta: 96.5 MB). Free memory was 115.0 MB in the beginning and 133.9 MB in the end (delta: -18.9 MB). Peak memory consumption was 77.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:30:57,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 180.4 MB. Free memory is still 160.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 406.70 ms. Allocated memory is still 180.4 MB. Free memory was 142.5 MB in the beginning and 142.8 MB in the end (delta: -291.3 kB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.98 ms. Allocated memory is still 180.4 MB. Free memory was 142.8 MB in the beginning and 140.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.16 ms. Allocated memory is still 180.4 MB. Free memory was 140.7 MB in the beginning and 139.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 481.07 ms. Allocated memory is still 180.4 MB. Free memory was 139.1 MB in the beginning and 115.5 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4859.98 ms. Allocated memory was 180.4 MB in the beginning and 276.8 MB in the end (delta: 96.5 MB). Free memory was 115.0 MB in the beginning and 133.9 MB in the end (delta: -18.9 MB). Peak memory consumption was 77.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 23.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4782.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3166.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 90.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 155 SDtfs, 341 SDslu, 528 SDs, 0 SdLazy, 508 SolverSat, 103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 395.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1347.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1004occurred in iteration=8, InterpolantAutomatonStates: 115, 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: 34.7ms SsaConstructionTime, 226.7ms SatisfiabilityAnalysisTime, 1052.5ms InterpolantComputationTime, 541 NumberOfCodeBlocks, 541 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 531 ConstructedInterpolants, 0 QuantifiedInterpolants, 2091 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...