/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 05:57:48,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 05:57:48,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 05:57:48,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 05:57:48,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 05:57:48,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 05:57:48,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 05:57:48,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 05:57:48,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 05:57:48,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 05:57:48,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 05:57:48,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 05:57:48,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 05:57:48,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 05:57:48,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 05:57:48,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 05:57:48,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 05:57:48,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 05:57:48,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 05:57:48,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 05:57:48,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 05:57:48,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 05:57:48,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 05:57:48,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 05:57:48,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 05:57:48,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 05:57:48,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 05:57:48,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 05:57:48,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 05:57:48,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 05:57:48,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 05:57:48,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 05:57:48,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 05:57:48,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 05:57:48,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 05:57:48,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 05:57:48,793 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-SemanticLbe-SemanticLooper.epf [2020-10-16 05:57:48,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 05:57:48,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 05:57:48,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 05:57:48,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 05:57:48,831 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 05:57:48,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 05:57:48,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 05:57:48,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 05:57:48,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 05:57:48,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 05:57:48,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 05:57:48,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 05:57:48,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 05:57:48,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 05:57:48,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 05:57:48,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 05:57:48,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 05:57:48,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 05:57:48,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 05:57:48,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 05:57:48,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 05:57:48,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 05:57:48,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 05:57:48,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 05:57:48,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 05:57:48,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 05:57:48,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 05:57:48,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 05:57:48,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 05:57:49,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 05:57:49,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 05:57:49,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 05:57:49,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 05:57:49,166 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 05:57:49,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 05:57:49,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555018f37/688105fed6d44f65ac5843ba3c9a2ea9/FLAGe7f769862 [2020-10-16 05:57:49,732 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 05:57:49,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2020-10-16 05:57:49,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555018f37/688105fed6d44f65ac5843ba3c9a2ea9/FLAGe7f769862 [2020-10-16 05:57:49,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/555018f37/688105fed6d44f65ac5843ba3c9a2ea9 [2020-10-16 05:57:49,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 05:57:49,979 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 05:57:49,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 05:57:49,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 05:57:49,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 05:57:49,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b1fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:49, skipping insertion in model container [2020-10-16 05:57:49,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:57:49" (1/1) ... [2020-10-16 05:57:49,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 05:57:50,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 05:57:50,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:57:50,507 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 05:57:50,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 05:57:50,633 INFO L208 MainTranslator]: Completed translation [2020-10-16 05:57:50,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50 WrapperNode [2020-10-16 05:57:50,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 05:57:50,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 05:57:50,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 05:57:50,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 05:57:50,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 05:57:50,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 05:57:50,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 05:57:50,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 05:57:50,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (1/1) ... [2020-10-16 05:57:50,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 05:57:50,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 05:57:50,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 05:57:50,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 05:57:50,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (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 [2020-10-16 05:57:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 05:57:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 05:57:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 05:57:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 05:57:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 05:57:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 05:57:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 05:57:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 05:57:50,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 05:57:50,774 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 05:57:51,102 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 05:57:51,102 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-16 05:57:51,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:57:51 BoogieIcfgContainer [2020-10-16 05:57:51,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 05:57:51,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 05:57:51,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 05:57:51,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 05:57:51,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:57:49" (1/3) ... [2020-10-16 05:57:51,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380f39dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:57:51, skipping insertion in model container [2020-10-16 05:57:51,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:57:50" (2/3) ... [2020-10-16 05:57:51,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380f39dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:57:51, skipping insertion in model container [2020-10-16 05:57:51,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:57:51" (3/3) ... [2020-10-16 05:57:51,112 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2020-10-16 05:57:51,123 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 05:57:51,131 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 05:57:51,132 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 05:57:51,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,156 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,157 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,158 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,159 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,161 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,166 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,166 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,167 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:51,199 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 05:57:51,218 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:57:51,218 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:57:51,218 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:57:51,218 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:57:51,218 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:57:51,219 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:57:51,219 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:57:51,219 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:57:51,231 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 05:57:51,271 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 05:57:51,271 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:51,277 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 05:57:51,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 58 transitions, 126 flow [2020-10-16 05:57:51,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:51,285 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:57:51,288 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:51,290 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:51,291 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 122 flow [2020-10-16 05:57:51,310 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2020-10-16 05:57:51,311 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:51,312 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 4/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 48. Up to 4 conditions per place. [2020-10-16 05:57:51,314 INFO L117 LiptonReduction]: Number of co-enabled transitions 592 [2020-10-16 05:57:52,628 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2020-10-16 05:57:52,858 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-16 05:57:52,924 INFO L132 LiptonReduction]: Checked pairs total: 576 [2020-10-16 05:57:52,925 INFO L134 LiptonReduction]: Total number of compositions: 54 [2020-10-16 05:57:52,934 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1651 [2020-10-16 05:57:52,939 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:57:52,940 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:52,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:52,941 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:57:52,941 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:57:52,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:52,947 INFO L82 PathProgramCache]: Analyzing trace with hash 229684, now seen corresponding path program 1 times [2020-10-16 05:57:52,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:52,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670864972] [2020-10-16 05:57:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:53,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670864972] [2020-10-16 05:57:53,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:53,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:57:53,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040395306] [2020-10-16 05:57:53,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:57:53,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:53,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:57:53,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:57:53,160 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 05:57:53,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states. [2020-10-16 05:57:53,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:53,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 05:57:53,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:53,199 INFO L129 PetriNetUnfolder]: 13/37 cut-off events. [2020-10-16 05:57:53,199 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:53,200 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 37 events. 13/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 103 event pairs, 4 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 69. Up to 19 conditions per place. [2020-10-16 05:57:53,201 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 7 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2020-10-16 05:57:53,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 14 transitions, 54 flow [2020-10-16 05:57:53,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:57:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:57:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2020-10-16 05:57:53,217 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2020-10-16 05:57:53,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2020-10-16 05:57:53,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2020-10-16 05:57:53,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:53,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2020-10-16 05:57:53,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:57:53,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:57:53,233 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:57:53,235 INFO L185 Difference]: Start difference. First operand has 17 places, 11 transitions, 30 flow. Second operand 3 states and 208 transitions. [2020-10-16 05:57:53,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 14 transitions, 54 flow [2020-10-16 05:57:53,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:53,241 INFO L241 Difference]: Finished difference. Result has 19 places, 11 transitions, 37 flow [2020-10-16 05:57:53,243 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2020-10-16 05:57:53,244 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 2 predicate places. [2020-10-16 05:57:53,244 INFO L481 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 37 flow [2020-10-16 05:57:53,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:57:53,245 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:53,245 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:53,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 05:57:53,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:57:53,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:53,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1647647298, now seen corresponding path program 1 times [2020-10-16 05:57:53,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:53,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892252951] [2020-10-16 05:57:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:53,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892252951] [2020-10-16 05:57:53,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:53,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 05:57:53,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531965527] [2020-10-16 05:57:53,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 05:57:53,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:53,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 05:57:53,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-16 05:57:53,353 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2020-10-16 05:57:53,354 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states. [2020-10-16 05:57:53,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:53,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2020-10-16 05:57:53,354 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:53,392 INFO L129 PetriNetUnfolder]: 11/32 cut-off events. [2020-10-16 05:57:53,392 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-16 05:57:53,394 INFO L80 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 32 events. 11/32 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 85 event pairs, 4 based on Foata normal form. 3/27 useless extension candidates. Maximal degree in co-relation 71. Up to 14 conditions per place. [2020-10-16 05:57:53,394 INFO L132 encePairwiseOnDemand]: 109/112 looper letters, 4 selfloop transitions, 2 changer transitions 2/13 dead transitions. [2020-10-16 05:57:53,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2020-10-16 05:57:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 05:57:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-16 05:57:53,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2020-10-16 05:57:53,400 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.609375 [2020-10-16 05:57:53,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 273 transitions. [2020-10-16 05:57:53,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 273 transitions. [2020-10-16 05:57:53,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:53,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 273 transitions. [2020-10-16 05:57:53,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 5 states. [2020-10-16 05:57:53,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 5 states. [2020-10-16 05:57:53,408 INFO L81 ComplementDD]: Finished complementDD. Result 5 states. [2020-10-16 05:57:53,408 INFO L185 Difference]: Start difference. First operand has 19 places, 11 transitions, 37 flow. Second operand 4 states and 273 transitions. [2020-10-16 05:57:53,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2020-10-16 05:57:53,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-16 05:57:53,409 INFO L241 Difference]: Finished difference. Result has 18 places, 9 transitions, 29 flow [2020-10-16 05:57:53,409 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=29, PETRI_PLACES=18, PETRI_TRANSITIONS=9} [2020-10-16 05:57:53,416 INFO L342 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2020-10-16 05:57:53,417 INFO L481 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 29 flow [2020-10-16 05:57:53,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 05:57:53,417 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:53,417 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:53,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 05:57:53,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:57:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:53,418 INFO L82 PathProgramCache]: Analyzing trace with hash -462538936, now seen corresponding path program 1 times [2020-10-16 05:57:53,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:53,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364160516] [2020-10-16 05:57:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:53,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:53,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:53,479 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:57:53,480 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:57:53,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 05:57:53,480 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 05:57:53,482 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:57:53,482 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 05:57:53,490 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,491 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,491 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,492 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,492 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,492 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,493 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,494 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,494 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,495 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,495 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,496 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,496 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,497 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,497 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,498 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,498 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,499 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,499 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,501 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,502 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,502 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,502 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,503 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,504 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,504 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,505 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,506 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,506 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:53,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 05:57:53,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:57:53,508 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:57:53,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:57:53,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:57:53,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:57:53,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:57:53,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:57:53,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:57:53,511 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 05:57:53,528 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 05:57:53,528 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:57:53,529 INFO L80 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 98. Up to 6 conditions per place. [2020-10-16 05:57:53,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 74 transitions, 172 flow [2020-10-16 05:57:53,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,530 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:57:53,530 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,531 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,531 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 68 places, 63 transitions, 141 flow [2020-10-16 05:57:53,545 INFO L129 PetriNetUnfolder]: 5/89 cut-off events. [2020-10-16 05:57:53,546 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:57:53,547 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 5/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 132 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 72. Up to 6 conditions per place. [2020-10-16 05:57:53,549 INFO L117 LiptonReduction]: Number of co-enabled transitions 920 [2020-10-16 05:57:54,694 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2020-10-16 05:57:55,035 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-16 05:57:55,121 INFO L132 LiptonReduction]: Checked pairs total: 1184 [2020-10-16 05:57:55,121 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 05:57:55,122 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1592 [2020-10-16 05:57:55,123 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 05:57:55,124 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:55,124 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:55,124 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:57:55,124 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:55,125 INFO L82 PathProgramCache]: Analyzing trace with hash 375535, now seen corresponding path program 1 times [2020-10-16 05:57:55,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:55,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182326566] [2020-10-16 05:57:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:55,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182326566] [2020-10-16 05:57:55,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:55,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:57:55,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829086450] [2020-10-16 05:57:55,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:57:55,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:55,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:57:55,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:57:55,191 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 131 [2020-10-16 05:57:55,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states. [2020-10-16 05:57:55,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:55,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 131 [2020-10-16 05:57:55,192 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:55,289 INFO L129 PetriNetUnfolder]: 122/218 cut-off events. [2020-10-16 05:57:55,289 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 05:57:55,292 INFO L80 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 218 events. 122/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1010 event pairs, 42 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 431. Up to 135 conditions per place. [2020-10-16 05:57:55,296 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 13 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2020-10-16 05:57:55,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 93 flow [2020-10-16 05:57:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:57:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:57:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2020-10-16 05:57:55,302 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6692111959287532 [2020-10-16 05:57:55,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2020-10-16 05:57:55,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2020-10-16 05:57:55,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:55,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2020-10-16 05:57:55,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:57:55,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:57:55,308 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:57:55,308 INFO L185 Difference]: Start difference. First operand has 24 places, 16 transitions, 47 flow. Second operand 3 states and 263 transitions. [2020-10-16 05:57:55,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 93 flow [2020-10-16 05:57:55,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 90 flow, removed 1 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:55,310 INFO L241 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2020-10-16 05:57:55,310 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2020-10-16 05:57:55,310 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2020-10-16 05:57:55,311 INFO L481 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2020-10-16 05:57:55,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:57:55,311 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:55,311 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:55,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 05:57:55,311 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:55,312 INFO L82 PathProgramCache]: Analyzing trace with hash 243832858, now seen corresponding path program 1 times [2020-10-16 05:57:55,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:55,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509869772] [2020-10-16 05:57:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:55,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509869772] [2020-10-16 05:57:55,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:55,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:55,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771226834] [2020-10-16 05:57:55,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:55,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:55,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:55,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:55,437 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 05:57:55,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand 5 states. [2020-10-16 05:57:55,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:55,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 05:57:55,438 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:55,556 INFO L129 PetriNetUnfolder]: 126/248 cut-off events. [2020-10-16 05:57:55,557 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-10-16 05:57:55,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 248 events. 126/248 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1263 event pairs, 20 based on Foata normal form. 11/218 useless extension candidates. Maximal degree in co-relation 586. Up to 68 conditions per place. [2020-10-16 05:57:55,559 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 23 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2020-10-16 05:57:55,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 166 flow [2020-10-16 05:57:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:55,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 505 transitions. [2020-10-16 05:57:55,562 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6424936386768448 [2020-10-16 05:57:55,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 505 transitions. [2020-10-16 05:57:55,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 505 transitions. [2020-10-16 05:57:55,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:55,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 505 transitions. [2020-10-16 05:57:55,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:55,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:55,566 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:55,566 INFO L185 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 6 states and 505 transitions. [2020-10-16 05:57:55,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 166 flow [2020-10-16 05:57:55,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:55,569 INFO L241 Difference]: Finished difference. Result has 33 places, 21 transitions, 99 flow [2020-10-16 05:57:55,569 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2020-10-16 05:57:55,569 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2020-10-16 05:57:55,569 INFO L481 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 99 flow [2020-10-16 05:57:55,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:55,569 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:55,570 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:55,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 05:57:55,570 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:55,570 INFO L82 PathProgramCache]: Analyzing trace with hash -88525361, now seen corresponding path program 1 times [2020-10-16 05:57:55,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:55,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282871931] [2020-10-16 05:57:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:57:55,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282871931] [2020-10-16 05:57:55,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:55,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:55,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669314852] [2020-10-16 05:57:55,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:55,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:55,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:55,625 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 131 [2020-10-16 05:57:55,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:57:55,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:55,626 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 131 [2020-10-16 05:57:55,626 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:55,722 INFO L129 PetriNetUnfolder]: 126/255 cut-off events. [2020-10-16 05:57:55,722 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-10-16 05:57:55,723 INFO L80 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 255 events. 126/255 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1283 event pairs, 23 based on Foata normal form. 12/224 useless extension candidates. Maximal degree in co-relation 700. Up to 61 conditions per place. [2020-10-16 05:57:55,725 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 24 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2020-10-16 05:57:55,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 224 flow [2020-10-16 05:57:55,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2020-10-16 05:57:55,727 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6437659033078881 [2020-10-16 05:57:55,727 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 506 transitions. [2020-10-16 05:57:55,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 506 transitions. [2020-10-16 05:57:55,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:55,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 506 transitions. [2020-10-16 05:57:55,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:55,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:55,731 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:55,731 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 99 flow. Second operand 6 states and 506 transitions. [2020-10-16 05:57:55,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 224 flow [2020-10-16 05:57:55,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 213 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 05:57:55,735 INFO L241 Difference]: Finished difference. Result has 39 places, 24 transitions, 141 flow [2020-10-16 05:57:55,736 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2020-10-16 05:57:55,736 INFO L342 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2020-10-16 05:57:55,736 INFO L481 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 141 flow [2020-10-16 05:57:55,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:55,736 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:55,737 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:55,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 05:57:55,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1548222349, now seen corresponding path program 1 times [2020-10-16 05:57:55,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:55,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252212404] [2020-10-16 05:57:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:55,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:55,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:55,769 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:57:55,770 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:57:55,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 05:57:55,770 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 05:57:55,771 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:57:55,778 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 05:57:55,793 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,794 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,794 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,794 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,796 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,796 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,797 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,797 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,797 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,798 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,798 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,798 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,798 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,798 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,799 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,802 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,804 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,804 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,804 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,805 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,805 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,806 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,806 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,807 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,808 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,809 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,809 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,810 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,810 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,811 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,817 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,818 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,818 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,824 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,825 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,834 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,834 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,846 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,847 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:55,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 05:57:55,850 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:57:55,850 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:57:55,850 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:57:55,850 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:57:55,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:57:55,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:57:55,851 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:57:55,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:57:55,856 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 05:57:55,872 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 05:57:55,873 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:57:55,874 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2020-10-16 05:57:55,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 90 transitions, 222 flow [2020-10-16 05:57:55,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,875 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:57:55,876 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,876 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,876 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 69 transitions, 162 flow [2020-10-16 05:57:55,889 INFO L129 PetriNetUnfolder]: 6/110 cut-off events. [2020-10-16 05:57:55,889 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:57:55,890 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 110 events. 6/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2020-10-16 05:57:55,893 INFO L117 LiptonReduction]: Number of co-enabled transitions 1308 [2020-10-16 05:57:56,797 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-16 05:57:57,064 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 05:57:57,090 INFO L132 LiptonReduction]: Checked pairs total: 1815 [2020-10-16 05:57:57,090 INFO L134 LiptonReduction]: Total number of compositions: 57 [2020-10-16 05:57:57,090 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1215 [2020-10-16 05:57:57,091 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 05:57:57,091 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:57:57,091 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,092 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:57:57,092 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,092 INFO L82 PathProgramCache]: Analyzing trace with hash 537369, now seen corresponding path program 1 times [2020-10-16 05:57:57,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137588217] [2020-10-16 05:57:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:57,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137588217] [2020-10-16 05:57:57,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:57,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:57:57,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107681160] [2020-10-16 05:57:57,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:57:57,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:57,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:57:57,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:57:57,114 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 147 [2020-10-16 05:57:57,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states. [2020-10-16 05:57:57,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:57,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 147 [2020-10-16 05:57:57,114 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:57,226 INFO L129 PetriNetUnfolder]: 582/877 cut-off events. [2020-10-16 05:57:57,227 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 05:57:57,229 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 877 events. 582/877 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4446 event pairs, 147 based on Foata normal form. 0/675 useless extension candidates. Maximal degree in co-relation 1751. Up to 675 conditions per place. [2020-10-16 05:57:57,233 INFO L132 encePairwiseOnDemand]: 142/147 looper letters, 16 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2020-10-16 05:57:57,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 120 flow [2020-10-16 05:57:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:57:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:57:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2020-10-16 05:57:57,235 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2020-10-16 05:57:57,235 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2020-10-16 05:57:57,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2020-10-16 05:57:57,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:57,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2020-10-16 05:57:57,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:57:57,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:57:57,238 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:57:57,238 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 62 flow. Second operand 3 states and 297 transitions. [2020-10-16 05:57:57,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 120 flow [2020-10-16 05:57:57,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 113 flow, removed 3 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:57,240 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 81 flow [2020-10-16 05:57:57,240 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2020-10-16 05:57:57,240 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2020-10-16 05:57:57,241 INFO L481 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 81 flow [2020-10-16 05:57:57,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:57:57,241 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,241 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:57,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 05:57:57,241 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1157508092, now seen corresponding path program 1 times [2020-10-16 05:57:57,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404667315] [2020-10-16 05:57:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:57:57,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404667315] [2020-10-16 05:57:57,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:57,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:57,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508911296] [2020-10-16 05:57:57,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:57,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:57,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:57,287 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 05:57:57,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 81 flow. Second operand 5 states. [2020-10-16 05:57:57,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:57,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 05:57:57,288 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:57,465 INFO L129 PetriNetUnfolder]: 740/1180 cut-off events. [2020-10-16 05:57:57,465 INFO L130 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2020-10-16 05:57:57,469 INFO L80 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 1180 events. 740/1180 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 6973 event pairs, 109 based on Foata normal form. 35/1052 useless extension candidates. Maximal degree in co-relation 2862. Up to 449 conditions per place. [2020-10-16 05:57:57,476 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 34 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2020-10-16 05:57:57,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 51 transitions, 245 flow [2020-10-16 05:57:57,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 585 transitions. [2020-10-16 05:57:57,479 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2020-10-16 05:57:57,479 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 585 transitions. [2020-10-16 05:57:57,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 585 transitions. [2020-10-16 05:57:57,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:57,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 585 transitions. [2020-10-16 05:57:57,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:57,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:57,483 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:57,483 INFO L185 Difference]: Start difference. First operand has 31 places, 22 transitions, 81 flow. Second operand 6 states and 585 transitions. [2020-10-16 05:57:57,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 51 transitions, 245 flow [2020-10-16 05:57:57,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 239 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:57,486 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 142 flow [2020-10-16 05:57:57,486 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2020-10-16 05:57:57,487 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2020-10-16 05:57:57,487 INFO L481 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 142 flow [2020-10-16 05:57:57,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:57,487 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,487 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:57,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 05:57:57,488 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,488 INFO L82 PathProgramCache]: Analyzing trace with hash -204391609, now seen corresponding path program 1 times [2020-10-16 05:57:57,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482397645] [2020-10-16 05:57:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:57:57,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482397645] [2020-10-16 05:57:57,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:57,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:57,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724124791] [2020-10-16 05:57:57,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:57,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:57,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:57,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:57,538 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 147 [2020-10-16 05:57:57,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 142 flow. Second operand 5 states. [2020-10-16 05:57:57,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:57,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 147 [2020-10-16 05:57:57,539 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:57,800 INFO L129 PetriNetUnfolder]: 895/1501 cut-off events. [2020-10-16 05:57:57,801 INFO L130 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2020-10-16 05:57:57,806 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 1501 events. 895/1501 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 9894 event pairs, 147 based on Foata normal form. 47/1334 useless extension candidates. Maximal degree in co-relation 4386. Up to 588 conditions per place. [2020-10-16 05:57:57,815 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 40 selfloop transitions, 15 changer transitions 0/62 dead transitions. [2020-10-16 05:57:57,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 395 flow [2020-10-16 05:57:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 586 transitions. [2020-10-16 05:57:57,819 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6643990929705216 [2020-10-16 05:57:57,819 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 586 transitions. [2020-10-16 05:57:57,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 586 transitions. [2020-10-16 05:57:57,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:57,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 586 transitions. [2020-10-16 05:57:57,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:57,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:57,823 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:57,823 INFO L185 Difference]: Start difference. First operand has 38 places, 28 transitions, 142 flow. Second operand 6 states and 586 transitions. [2020-10-16 05:57:57,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 395 flow [2020-10-16 05:57:57,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2020-10-16 05:57:57,833 INFO L241 Difference]: Finished difference. Result has 44 places, 37 transitions, 244 flow [2020-10-16 05:57:57,833 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2020-10-16 05:57:57,834 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2020-10-16 05:57:57,834 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 244 flow [2020-10-16 05:57:57,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:57,834 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:57,834 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:57,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 05:57:57,835 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:57,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:57,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1864579528, now seen corresponding path program 1 times [2020-10-16 05:57:57,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:57,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574543657] [2020-10-16 05:57:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:57:57,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574543657] [2020-10-16 05:57:57,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902445288] [2020-10-16 05:57:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:57:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:57,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:57:57,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:57:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:57:58,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:57:58,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:57:58,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977896327] [2020-10-16 05:57:58,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:57:58,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:57:58,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:57:58,042 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 05:57:58,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 244 flow. Second operand 12 states. [2020-10-16 05:57:58,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:58,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 05:57:58,044 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:58,559 INFO L129 PetriNetUnfolder]: 908/1533 cut-off events. [2020-10-16 05:57:58,559 INFO L130 PetriNetUnfolder]: For 1821/1821 co-relation queries the response was YES. [2020-10-16 05:57:58,565 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 1533 events. 908/1533 cut-off events. For 1821/1821 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 10309 event pairs, 98 based on Foata normal form. 11/1325 useless extension candidates. Maximal degree in co-relation 5211. Up to 462 conditions per place. [2020-10-16 05:57:58,576 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 63 selfloop transitions, 29 changer transitions 0/98 dead transitions. [2020-10-16 05:57:58,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 98 transitions, 650 flow [2020-10-16 05:57:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:57:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:57:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 05:57:58,582 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 05:57:58,582 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 05:57:58,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 05:57:58,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:58,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 05:57:58,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:57:58,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:57:58,591 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:57:58,592 INFO L185 Difference]: Start difference. First operand has 44 places, 37 transitions, 244 flow. Second operand 13 states and 1234 transitions. [2020-10-16 05:57:58,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 98 transitions, 650 flow [2020-10-16 05:57:58,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 634 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:57:58,623 INFO L241 Difference]: Finished difference. Result has 58 places, 47 transitions, 388 flow [2020-10-16 05:57:58,623 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=388, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2020-10-16 05:57:58,623 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2020-10-16 05:57:58,623 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 388 flow [2020-10-16 05:57:58,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:57:58,624 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:58,624 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:58,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 05:57:58,840 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1148161428, now seen corresponding path program 2 times [2020-10-16 05:57:58,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:58,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295597345] [2020-10-16 05:57:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:58,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:57:58,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295597345] [2020-10-16 05:57:58,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:58,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:57:58,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020388137] [2020-10-16 05:57:58,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:57:58,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:58,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:57:58,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:57:58,900 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 147 [2020-10-16 05:57:58,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 388 flow. Second operand 7 states. [2020-10-16 05:57:58,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:58,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 147 [2020-10-16 05:57:58,901 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:59,273 INFO L129 PetriNetUnfolder]: 920/1573 cut-off events. [2020-10-16 05:57:59,274 INFO L130 PetriNetUnfolder]: For 3297/3297 co-relation queries the response was YES. [2020-10-16 05:57:59,281 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5993 conditions, 1573 events. 920/1573 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 10789 event pairs, 101 based on Foata normal form. 11/1360 useless extension candidates. Maximal degree in co-relation 5969. Up to 392 conditions per place. [2020-10-16 05:57:59,291 INFO L132 encePairwiseOnDemand]: 140/147 looper letters, 64 selfloop transitions, 32 changer transitions 0/102 dead transitions. [2020-10-16 05:57:59,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 773 flow [2020-10-16 05:57:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:57:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:57:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1234 transitions. [2020-10-16 05:57:59,296 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6457352171637886 [2020-10-16 05:57:59,296 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1234 transitions. [2020-10-16 05:57:59,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1234 transitions. [2020-10-16 05:57:59,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:59,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1234 transitions. [2020-10-16 05:57:59,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:57:59,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:57:59,304 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:57:59,304 INFO L185 Difference]: Start difference. First operand has 58 places, 47 transitions, 388 flow. Second operand 13 states and 1234 transitions. [2020-10-16 05:57:59,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 773 flow [2020-10-16 05:57:59,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 710 flow, removed 6 selfloop flow, removed 7 redundant places. [2020-10-16 05:57:59,342 INFO L241 Difference]: Finished difference. Result has 66 places, 52 transitions, 455 flow [2020-10-16 05:57:59,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=455, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2020-10-16 05:57:59,342 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2020-10-16 05:57:59,342 INFO L481 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 455 flow [2020-10-16 05:57:59,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:57:59,343 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:59,343 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:59,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 05:57:59,343 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1717126990, now seen corresponding path program 1 times [2020-10-16 05:57:59,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:59,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366427123] [2020-10-16 05:57:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:57:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:57:59,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366427123] [2020-10-16 05:57:59,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:57:59,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:57:59,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478545347] [2020-10-16 05:57:59,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:57:59,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:57:59,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:57:59,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:57:59,388 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 147 [2020-10-16 05:57:59,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 455 flow. Second operand 5 states. [2020-10-16 05:57:59,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:57:59,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 147 [2020-10-16 05:57:59,389 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:57:59,678 INFO L129 PetriNetUnfolder]: 1041/1845 cut-off events. [2020-10-16 05:57:59,678 INFO L130 PetriNetUnfolder]: For 5664/5670 co-relation queries the response was YES. [2020-10-16 05:57:59,686 INFO L80 FinitePrefix]: Finished finitePrefix Result has 7280 conditions, 1845 events. 1041/1845 cut-off events. For 5664/5670 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 13375 event pairs, 120 based on Foata normal form. 63/1634 useless extension candidates. Maximal degree in co-relation 7254. Up to 781 conditions per place. [2020-10-16 05:57:59,697 INFO L132 encePairwiseOnDemand]: 141/147 looper letters, 66 selfloop transitions, 30 changer transitions 0/103 dead transitions. [2020-10-16 05:57:59,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 1059 flow [2020-10-16 05:57:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:57:59,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:57:59,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 580 transitions. [2020-10-16 05:57:59,700 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6575963718820862 [2020-10-16 05:57:59,700 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 580 transitions. [2020-10-16 05:57:59,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 580 transitions. [2020-10-16 05:57:59,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:57:59,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 580 transitions. [2020-10-16 05:57:59,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:57:59,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:57:59,704 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:57:59,704 INFO L185 Difference]: Start difference. First operand has 66 places, 52 transitions, 455 flow. Second operand 6 states and 580 transitions. [2020-10-16 05:57:59,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 1059 flow [2020-10-16 05:57:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 946 flow, removed 10 selfloop flow, removed 9 redundant places. [2020-10-16 05:57:59,761 INFO L241 Difference]: Finished difference. Result has 65 places, 73 transitions, 739 flow [2020-10-16 05:57:59,761 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=739, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2020-10-16 05:57:59,762 INFO L342 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2020-10-16 05:57:59,762 INFO L481 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 739 flow [2020-10-16 05:57:59,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:57:59,762 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:57:59,763 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:57:59,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 05:57:59,763 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 05:57:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:57:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1694375059, now seen corresponding path program 1 times [2020-10-16 05:57:59,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:57:59,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998044639] [2020-10-16 05:57:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:57:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:59,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 05:57:59,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 05:57:59,790 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 05:57:59,791 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 05:57:59,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 05:57:59,791 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 05:57:59,792 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 05:57:59,794 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 05:57:59,810 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,810 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,811 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,813 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,813 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,815 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,815 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,821 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,823 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,823 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,825 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,825 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,825 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,827 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,827 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,827 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,828 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,828 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,829 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,829 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,830 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,830 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,833 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,833 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,835 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,835 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,837 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,837 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,838 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 05:57:59,840 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 05:57:59,840 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 05:57:59,840 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 05:57:59,840 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 05:57:59,840 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 05:57:59,841 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 05:57:59,841 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 05:57:59,841 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 05:57:59,841 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 05:57:59,843 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 05:57:59,857 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 05:57:59,857 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:57:59,858 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 151. Up to 10 conditions per place. [2020-10-16 05:57:59,858 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 106 transitions, 276 flow [2020-10-16 05:57:59,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 185 flow [2020-10-16 05:57:59,860 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 05:57:59,860 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 05:57:59,860 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 185 flow [2020-10-16 05:57:59,860 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 185 flow [2020-10-16 05:57:59,874 INFO L129 PetriNetUnfolder]: 7/131 cut-off events. [2020-10-16 05:57:59,874 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:57:59,875 INFO L80 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 131 events. 7/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 125. Up to 10 conditions per place. [2020-10-16 05:57:59,879 INFO L117 LiptonReduction]: Number of co-enabled transitions 1756 [2020-10-16 05:58:00,785 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-16 05:58:01,118 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 05:58:01,247 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 05:58:01,256 INFO L132 LiptonReduction]: Checked pairs total: 2872 [2020-10-16 05:58:01,256 INFO L134 LiptonReduction]: Total number of compositions: 64 [2020-10-16 05:58:01,256 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1396 [2020-10-16 05:58:01,258 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2020-10-16 05:58:01,258 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 05:58:01,258 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:01,258 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 05:58:01,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:01,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:01,259 INFO L82 PathProgramCache]: Analyzing trace with hash 719895, now seen corresponding path program 1 times [2020-10-16 05:58:01,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:01,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508419547] [2020-10-16 05:58:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:58:01,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508419547] [2020-10-16 05:58:01,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:01,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 05:58:01,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088777088] [2020-10-16 05:58:01,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 05:58:01,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:01,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 05:58:01,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 05:58:01,280 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 170 [2020-10-16 05:58:01,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states. [2020-10-16 05:58:01,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:01,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 170 [2020-10-16 05:58:01,281 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:01,544 INFO L129 PetriNetUnfolder]: 2434/3340 cut-off events. [2020-10-16 05:58:01,545 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 05:58:01,552 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6692 conditions, 3340 events. 2434/3340 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 18034 event pairs, 518 based on Foata normal form. 0/2699 useless extension candidates. Maximal degree in co-relation 6680. Up to 2863 conditions per place. [2020-10-16 05:58:01,569 INFO L132 encePairwiseOnDemand]: 164/170 looper letters, 19 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2020-10-16 05:58:01,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 149 flow [2020-10-16 05:58:01,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 05:58:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 05:58:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2020-10-16 05:58:01,572 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6607843137254902 [2020-10-16 05:58:01,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2020-10-16 05:58:01,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2020-10-16 05:58:01,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:01,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2020-10-16 05:58:01,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 05:58:01,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 05:58:01,575 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 05:58:01,575 INFO L185 Difference]: Start difference. First operand has 34 places, 22 transitions, 79 flow. Second operand 3 states and 337 transitions. [2020-10-16 05:58:01,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 149 flow [2020-10-16 05:58:01,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 136 flow, removed 6 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:01,577 INFO L241 Difference]: Finished difference. Result has 36 places, 26 transitions, 99 flow [2020-10-16 05:58:01,577 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2020-10-16 05:58:01,577 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 05:58:01,577 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 99 flow [2020-10-16 05:58:01,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 05:58:01,577 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:01,577 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:01,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 05:58:01,578 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:01,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1994870888, now seen corresponding path program 1 times [2020-10-16 05:58:01,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:01,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314412717] [2020-10-16 05:58:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 05:58:01,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314412717] [2020-10-16 05:58:01,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:01,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:01,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261322536] [2020-10-16 05:58:01,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:01,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:01,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:01,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:01,627 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 170 [2020-10-16 05:58:01,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 99 flow. Second operand 5 states. [2020-10-16 05:58:01,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:01,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 170 [2020-10-16 05:58:01,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:02,082 INFO L129 PetriNetUnfolder]: 3576/5078 cut-off events. [2020-10-16 05:58:02,082 INFO L130 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2020-10-16 05:58:02,095 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 5078 events. 3576/5078 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 31693 event pairs, 508 based on Foata normal form. 107/4599 useless extension candidates. Maximal degree in co-relation 12404. Up to 2253 conditions per place. [2020-10-16 05:58:02,129 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 41 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2020-10-16 05:58:02,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 304 flow [2020-10-16 05:58:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2020-10-16 05:58:02,132 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.653921568627451 [2020-10-16 05:58:02,132 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2020-10-16 05:58:02,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2020-10-16 05:58:02,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:02,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2020-10-16 05:58:02,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:02,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:02,137 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:02,137 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 99 flow. Second operand 6 states and 667 transitions. [2020-10-16 05:58:02,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 304 flow [2020-10-16 05:58:02,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 62 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:02,139 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 179 flow [2020-10-16 05:58:02,140 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 05:58:02,140 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2020-10-16 05:58:02,140 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 179 flow [2020-10-16 05:58:02,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:02,140 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:02,140 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:02,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 05:58:02,141 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1753297957, now seen corresponding path program 1 times [2020-10-16 05:58:02,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:02,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95959663] [2020-10-16 05:58:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:58:02,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95959663] [2020-10-16 05:58:02,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:02,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:02,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462432891] [2020-10-16 05:58:02,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:02,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:02,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:02,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:02,172 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 05:58:02,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 179 flow. Second operand 5 states. [2020-10-16 05:58:02,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:02,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 05:58:02,173 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:02,741 INFO L129 PetriNetUnfolder]: 5127/7515 cut-off events. [2020-10-16 05:58:02,741 INFO L130 PetriNetUnfolder]: For 4030/4030 co-relation queries the response was YES. [2020-10-16 05:58:02,758 INFO L80 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 7515 events. 5127/7515 cut-off events. For 4030/4030 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 52488 event pairs, 842 based on Foata normal form. 157/6792 useless extension candidates. Maximal degree in co-relation 22400. Up to 3474 conditions per place. [2020-10-16 05:58:02,787 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 49 selfloop transitions, 20 changer transitions 0/77 dead transitions. [2020-10-16 05:58:02,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 502 flow [2020-10-16 05:58:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 05:58:02,790 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 05:58:02,790 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 05:58:02,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 05:58:02,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:02,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 05:58:02,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:02,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:02,794 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:02,794 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 179 flow. Second operand 6 states and 662 transitions. [2020-10-16 05:58:02,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 502 flow [2020-10-16 05:58:02,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 471 flow, removed 6 selfloop flow, removed 2 redundant places. [2020-10-16 05:58:02,821 INFO L241 Difference]: Finished difference. Result has 49 places, 46 transitions, 311 flow [2020-10-16 05:58:02,821 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2020-10-16 05:58:02,821 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2020-10-16 05:58:02,821 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 311 flow [2020-10-16 05:58:02,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:02,821 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:02,822 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:02,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 05:58:02,822 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:02,822 INFO L82 PathProgramCache]: Analyzing trace with hash 180892130, now seen corresponding path program 1 times [2020-10-16 05:58:02,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:02,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625460417] [2020-10-16 05:58:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:58:02,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625460417] [2020-10-16 05:58:02,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564159001] [2020-10-16 05:58:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:02,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:58:02,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 05:58:02,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:02,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:58:02,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93570853] [2020-10-16 05:58:02,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:58:02,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:02,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:58:02,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:58:02,996 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:02,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 311 flow. Second operand 12 states. [2020-10-16 05:58:02,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:02,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:02,997 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:03,927 INFO L129 PetriNetUnfolder]: 5374/7933 cut-off events. [2020-10-16 05:58:03,927 INFO L130 PetriNetUnfolder]: For 8803/8803 co-relation queries the response was YES. [2020-10-16 05:58:03,941 INFO L80 FinitePrefix]: Finished finitePrefix Result has 27433 conditions, 7933 events. 5374/7933 cut-off events. For 8803/8803 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 56592 event pairs, 681 based on Foata normal form. 35/7031 useless extension candidates. Maximal degree in co-relation 27412. Up to 2761 conditions per place. [2020-10-16 05:58:03,970 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 85 selfloop transitions, 38 changer transitions 0/130 dead transitions. [2020-10-16 05:58:03,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 130 transitions, 879 flow [2020-10-16 05:58:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:03,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 05:58:03,975 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 05:58:03,975 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 05:58:03,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 05:58:03,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:03,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 05:58:03,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:03,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:03,983 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:03,983 INFO L185 Difference]: Start difference. First operand has 49 places, 46 transitions, 311 flow. Second operand 13 states and 1407 transitions. [2020-10-16 05:58:03,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 130 transitions, 879 flow [2020-10-16 05:58:04,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 130 transitions, 853 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:04,105 INFO L241 Difference]: Finished difference. Result has 63 places, 59 transitions, 496 flow [2020-10-16 05:58:04,106 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2020-10-16 05:58:04,107 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2020-10-16 05:58:04,107 INFO L481 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 496 flow [2020-10-16 05:58:04,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:58:04,108 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:04,108 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:04,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 05:58:04,321 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:04,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:04,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1292148820, now seen corresponding path program 2 times [2020-10-16 05:58:04,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:04,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941125272] [2020-10-16 05:58:04,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 05:58:04,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941125272] [2020-10-16 05:58:04,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:04,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:58:04,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064579024] [2020-10-16 05:58:04,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:58:04,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:58:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:58:04,366 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:04,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 496 flow. Second operand 7 states. [2020-10-16 05:58:04,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:04,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:04,367 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:05,208 INFO L129 PetriNetUnfolder]: 5620/8365 cut-off events. [2020-10-16 05:58:05,208 INFO L130 PetriNetUnfolder]: For 15853/15853 co-relation queries the response was YES. [2020-10-16 05:58:05,229 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32402 conditions, 8365 events. 5620/8365 cut-off events. For 15853/15853 co-relation queries the response was YES. Maximal size of possible extension queue 1114. Compared 61420 event pairs, 704 based on Foata normal form. 35/7398 useless extension candidates. Maximal degree in co-relation 32377. Up to 2492 conditions per place. [2020-10-16 05:58:05,259 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 88 selfloop transitions, 43 changer transitions 0/138 dead transitions. [2020-10-16 05:58:05,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 138 transitions, 1076 flow [2020-10-16 05:58:05,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:05,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1407 transitions. [2020-10-16 05:58:05,264 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6366515837104072 [2020-10-16 05:58:05,264 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1407 transitions. [2020-10-16 05:58:05,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1407 transitions. [2020-10-16 05:58:05,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:05,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1407 transitions. [2020-10-16 05:58:05,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:05,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:05,272 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:05,272 INFO L185 Difference]: Start difference. First operand has 63 places, 59 transitions, 496 flow. Second operand 13 states and 1407 transitions. [2020-10-16 05:58:05,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 138 transitions, 1076 flow [2020-10-16 05:58:05,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 992 flow, removed 8 selfloop flow, removed 7 redundant places. [2020-10-16 05:58:05,520 INFO L241 Difference]: Finished difference. Result has 71 places, 68 transitions, 613 flow [2020-10-16 05:58:05,520 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=613, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2020-10-16 05:58:05,520 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 37 predicate places. [2020-10-16 05:58:05,521 INFO L481 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 613 flow [2020-10-16 05:58:05,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:58:05,521 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:05,521 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:05,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 05:58:05,521 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:05,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1688505154, now seen corresponding path program 1 times [2020-10-16 05:58:05,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:05,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390708990] [2020-10-16 05:58:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:05,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390708990] [2020-10-16 05:58:05,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:05,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:05,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083209178] [2020-10-16 05:58:05,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:05,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:05,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:05,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:05,570 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 05:58:05,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 613 flow. Second operand 5 states. [2020-10-16 05:58:05,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:05,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 05:58:05,571 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:06,626 INFO L129 PetriNetUnfolder]: 7715/11859 cut-off events. [2020-10-16 05:58:06,626 INFO L130 PetriNetUnfolder]: For 36680/36686 co-relation queries the response was YES. [2020-10-16 05:58:06,664 INFO L80 FinitePrefix]: Finished finitePrefix Result has 50277 conditions, 11859 events. 7715/11859 cut-off events. For 36680/36686 co-relation queries the response was YES. Maximal size of possible extension queue 1754. Compared 95204 event pairs, 1208 based on Foata normal form. 250/10625 useless extension candidates. Maximal degree in co-relation 50250. Up to 5721 conditions per place. [2020-10-16 05:58:06,696 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 98 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2020-10-16 05:58:06,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 146 transitions, 1574 flow [2020-10-16 05:58:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 05:58:06,698 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 05:58:06,698 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 05:58:06,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 05:58:06,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:06,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 05:58:06,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:06,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:06,701 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:06,701 INFO L185 Difference]: Start difference. First operand has 71 places, 68 transitions, 613 flow. Second operand 6 states and 662 transitions. [2020-10-16 05:58:06,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 146 transitions, 1574 flow [2020-10-16 05:58:07,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 146 transitions, 1401 flow, removed 16 selfloop flow, removed 9 redundant places. [2020-10-16 05:58:07,131 INFO L241 Difference]: Finished difference. Result has 70 places, 95 transitions, 962 flow [2020-10-16 05:58:07,131 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=70, PETRI_TRANSITIONS=95} [2020-10-16 05:58:07,132 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2020-10-16 05:58:07,132 INFO L481 AbstractCegarLoop]: Abstraction has has 70 places, 95 transitions, 962 flow [2020-10-16 05:58:07,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:07,132 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:07,132 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:07,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 05:58:07,132 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:07,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2001719257, now seen corresponding path program 1 times [2020-10-16 05:58:07,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:07,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034598303] [2020-10-16 05:58:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:07,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034598303] [2020-10-16 05:58:07,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821070494] [2020-10-16 05:58:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:07,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:58:07,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:07,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:07,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:58:07,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646457858] [2020-10-16 05:58:07,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:58:07,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:07,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:58:07,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:58:07,351 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:07,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 95 transitions, 962 flow. Second operand 12 states. [2020-10-16 05:58:07,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:07,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:07,352 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:08,998 INFO L129 PetriNetUnfolder]: 8077/12514 cut-off events. [2020-10-16 05:58:08,998 INFO L130 PetriNetUnfolder]: For 45738/45744 co-relation queries the response was YES. [2020-10-16 05:58:09,035 INFO L80 FinitePrefix]: Finished finitePrefix Result has 56287 conditions, 12514 events. 8077/12514 cut-off events. For 45738/45744 co-relation queries the response was YES. Maximal size of possible extension queue 1913. Compared 103333 event pairs, 990 based on Foata normal form. 75/11018 useless extension candidates. Maximal degree in co-relation 56257. Up to 3566 conditions per place. [2020-10-16 05:58:09,067 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 116 selfloop transitions, 80 changer transitions 0/203 dead transitions. [2020-10-16 05:58:09,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 203 transitions, 2090 flow [2020-10-16 05:58:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 05:58:09,070 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 05:58:09,070 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 05:58:09,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 05:58:09,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:09,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 05:58:09,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:09,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:09,076 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:09,076 INFO L185 Difference]: Start difference. First operand has 70 places, 95 transitions, 962 flow. Second operand 13 states and 1409 transitions. [2020-10-16 05:58:09,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 203 transitions, 2090 flow [2020-10-16 05:58:09,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 203 transitions, 2025 flow, removed 28 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:09,865 INFO L241 Difference]: Finished difference. Result has 84 places, 121 transitions, 1430 flow [2020-10-16 05:58:09,866 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1430, PETRI_PLACES=84, PETRI_TRANSITIONS=121} [2020-10-16 05:58:09,866 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2020-10-16 05:58:09,866 INFO L481 AbstractCegarLoop]: Abstraction has has 84 places, 121 transitions, 1430 flow [2020-10-16 05:58:09,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:58:09,866 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:09,866 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:10,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:10,074 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:10,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2144894803, now seen corresponding path program 1 times [2020-10-16 05:58:10,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:10,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668302725] [2020-10-16 05:58:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:10,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668302725] [2020-10-16 05:58:10,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340063460] [2020-10-16 05:58:10,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:10,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 05:58:10,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:10,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:10,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 05:58:10,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385156250] [2020-10-16 05:58:10,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 05:58:10,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:10,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 05:58:10,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-16 05:58:10,278 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 05:58:10,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 121 transitions, 1430 flow. Second operand 12 states. [2020-10-16 05:58:10,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:10,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 05:58:10,279 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:11,719 INFO L129 PetriNetUnfolder]: 8352/13049 cut-off events. [2020-10-16 05:58:11,719 INFO L130 PetriNetUnfolder]: For 64367/64367 co-relation queries the response was YES. [2020-10-16 05:58:11,777 INFO L80 FinitePrefix]: Finished finitePrefix Result has 63154 conditions, 13049 events. 8352/13049 cut-off events. For 64367/64367 co-relation queries the response was YES. Maximal size of possible extension queue 2045. Compared 109437 event pairs, 925 based on Foata normal form. 69/11477 useless extension candidates. Maximal degree in co-relation 63120. Up to 3075 conditions per place. [2020-10-16 05:58:11,814 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 136 selfloop transitions, 91 changer transitions 0/234 dead transitions. [2020-10-16 05:58:11,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 234 transitions, 2751 flow [2020-10-16 05:58:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 05:58:11,818 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 05:58:11,818 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 05:58:11,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 05:58:11,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:11,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 05:58:11,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:11,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:11,823 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:11,823 INFO L185 Difference]: Start difference. First operand has 84 places, 121 transitions, 1430 flow. Second operand 13 states and 1397 transitions. [2020-10-16 05:58:11,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 234 transitions, 2751 flow [2020-10-16 05:58:13,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 234 transitions, 2666 flow, removed 26 selfloop flow, removed 3 redundant places. [2020-10-16 05:58:13,639 INFO L241 Difference]: Finished difference. Result has 96 places, 150 transitions, 1973 flow [2020-10-16 05:58:13,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1973, PETRI_PLACES=96, PETRI_TRANSITIONS=150} [2020-10-16 05:58:13,640 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2020-10-16 05:58:13,640 INFO L481 AbstractCegarLoop]: Abstraction has has 96 places, 150 transitions, 1973 flow [2020-10-16 05:58:13,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 05:58:13,640 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:13,640 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:13,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:13,856 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:13,857 INFO L82 PathProgramCache]: Analyzing trace with hash 844187883, now seen corresponding path program 2 times [2020-10-16 05:58:13,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:13,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742074703] [2020-10-16 05:58:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:13,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742074703] [2020-10-16 05:58:13,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:13,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:58:13,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888641035] [2020-10-16 05:58:13,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:58:13,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:13,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:58:13,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:58:13,901 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 170 [2020-10-16 05:58:13,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 150 transitions, 1973 flow. Second operand 7 states. [2020-10-16 05:58:13,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:13,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 170 [2020-10-16 05:58:13,903 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:15,599 INFO L129 PetriNetUnfolder]: 8613/13540 cut-off events. [2020-10-16 05:58:15,600 INFO L130 PetriNetUnfolder]: For 83921/83921 co-relation queries the response was YES. [2020-10-16 05:58:15,649 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70630 conditions, 13540 events. 8613/13540 cut-off events. For 83921/83921 co-relation queries the response was YES. Maximal size of possible extension queue 2164. Compared 115485 event pairs, 978 based on Foata normal form. 55/11876 useless extension candidates. Maximal degree in co-relation 70593. Up to 3100 conditions per place. [2020-10-16 05:58:15,685 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 144 selfloop transitions, 100 changer transitions 0/251 dead transitions. [2020-10-16 05:58:15,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 251 transitions, 3208 flow [2020-10-16 05:58:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1397 transitions. [2020-10-16 05:58:15,687 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6321266968325792 [2020-10-16 05:58:15,687 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1397 transitions. [2020-10-16 05:58:15,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1397 transitions. [2020-10-16 05:58:15,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:15,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1397 transitions. [2020-10-16 05:58:15,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:15,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:15,691 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:15,691 INFO L185 Difference]: Start difference. First operand has 96 places, 150 transitions, 1973 flow. Second operand 13 states and 1397 transitions. [2020-10-16 05:58:15,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 251 transitions, 3208 flow [2020-10-16 05:58:17,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 251 transitions, 3156 flow, removed 24 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:17,617 INFO L241 Difference]: Finished difference. Result has 110 places, 167 transitions, 2420 flow [2020-10-16 05:58:17,617 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2420, PETRI_PLACES=110, PETRI_TRANSITIONS=167} [2020-10-16 05:58:17,617 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 76 predicate places. [2020-10-16 05:58:17,617 INFO L481 AbstractCegarLoop]: Abstraction has has 110 places, 167 transitions, 2420 flow [2020-10-16 05:58:17,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:58:17,618 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:17,618 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:17,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-16 05:58:17,618 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:17,618 INFO L82 PathProgramCache]: Analyzing trace with hash 844192719, now seen corresponding path program 2 times [2020-10-16 05:58:17,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:17,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396317634] [2020-10-16 05:58:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:17,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396317634] [2020-10-16 05:58:17,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:17,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 05:58:17,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347028206] [2020-10-16 05:58:17,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 05:58:17,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:17,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 05:58:17,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 05:58:17,658 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 170 [2020-10-16 05:58:17,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 167 transitions, 2420 flow. Second operand 7 states. [2020-10-16 05:58:17,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:17,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 170 [2020-10-16 05:58:17,659 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:19,677 INFO L129 PetriNetUnfolder]: 8876/14053 cut-off events. [2020-10-16 05:58:19,677 INFO L130 PetriNetUnfolder]: For 108485/108491 co-relation queries the response was YES. [2020-10-16 05:58:19,746 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78185 conditions, 14053 events. 8876/14053 cut-off events. For 108485/108491 co-relation queries the response was YES. Maximal size of possible extension queue 2296. Compared 121675 event pairs, 1016 based on Foata normal form. 75/12311 useless extension candidates. Maximal degree in co-relation 78144. Up to 3184 conditions per place. [2020-10-16 05:58:19,787 INFO L132 encePairwiseOnDemand]: 162/170 looper letters, 148 selfloop transitions, 113 changer transitions 0/268 dead transitions. [2020-10-16 05:58:19,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 268 transitions, 3804 flow [2020-10-16 05:58:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 05:58:19,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 05:58:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1409 transitions. [2020-10-16 05:58:19,789 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6375565610859728 [2020-10-16 05:58:19,789 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1409 transitions. [2020-10-16 05:58:19,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1409 transitions. [2020-10-16 05:58:19,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:19,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1409 transitions. [2020-10-16 05:58:19,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 05:58:19,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 05:58:19,792 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 05:58:19,792 INFO L185 Difference]: Start difference. First operand has 110 places, 167 transitions, 2420 flow. Second operand 13 states and 1409 transitions. [2020-10-16 05:58:19,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 268 transitions, 3804 flow [2020-10-16 05:58:23,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 268 transitions, 3557 flow, removed 29 selfloop flow, removed 9 redundant places. [2020-10-16 05:58:23,768 INFO L241 Difference]: Finished difference. Result has 116 places, 189 transitions, 2838 flow [2020-10-16 05:58:23,768 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2838, PETRI_PLACES=116, PETRI_TRANSITIONS=189} [2020-10-16 05:58:23,768 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 82 predicate places. [2020-10-16 05:58:23,768 INFO L481 AbstractCegarLoop]: Abstraction has has 116 places, 189 transitions, 2838 flow [2020-10-16 05:58:23,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 05:58:23,768 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:23,769 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:23,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-16 05:58:23,769 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:23,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1920026451, now seen corresponding path program 1 times [2020-10-16 05:58:23,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:23,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431456769] [2020-10-16 05:58:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 05:58:23,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431456769] [2020-10-16 05:58:23,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:23,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 05:58:23,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579202359] [2020-10-16 05:58:23,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 05:58:23,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:23,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 05:58:23,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 05:58:23,825 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 170 [2020-10-16 05:58:23,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 189 transitions, 2838 flow. Second operand 5 states. [2020-10-16 05:58:23,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:23,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 170 [2020-10-16 05:58:23,826 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:25,751 INFO L129 PetriNetUnfolder]: 11650/18969 cut-off events. [2020-10-16 05:58:25,751 INFO L130 PetriNetUnfolder]: For 193622/193661 co-relation queries the response was YES. [2020-10-16 05:58:25,880 INFO L80 FinitePrefix]: Finished finitePrefix Result has 107448 conditions, 18969 events. 11650/18969 cut-off events. For 193622/193661 co-relation queries the response was YES. Maximal size of possible extension queue 3339. Compared 175143 event pairs, 1305 based on Foata normal form. 415/16918 useless extension candidates. Maximal degree in co-relation 107404. Up to 10089 conditions per place. [2020-10-16 05:58:25,940 INFO L132 encePairwiseOnDemand]: 163/170 looper letters, 279 selfloop transitions, 89 changer transitions 0/376 dead transitions. [2020-10-16 05:58:25,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 376 transitions, 6442 flow [2020-10-16 05:58:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 05:58:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 05:58:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 662 transitions. [2020-10-16 05:58:25,941 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6490196078431373 [2020-10-16 05:58:25,941 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 662 transitions. [2020-10-16 05:58:25,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 662 transitions. [2020-10-16 05:58:25,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:25,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 662 transitions. [2020-10-16 05:58:25,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 05:58:25,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 05:58:25,943 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 05:58:25,943 INFO L185 Difference]: Start difference. First operand has 116 places, 189 transitions, 2838 flow. Second operand 6 states and 662 transitions. [2020-10-16 05:58:25,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 376 transitions, 6442 flow [2020-10-16 05:58:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 376 transitions, 6204 flow, removed 45 selfloop flow, removed 6 redundant places. [2020-10-16 05:58:30,970 INFO L241 Difference]: Finished difference. Result has 118 places, 257 transitions, 4245 flow [2020-10-16 05:58:30,970 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4245, PETRI_PLACES=118, PETRI_TRANSITIONS=257} [2020-10-16 05:58:30,970 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 84 predicate places. [2020-10-16 05:58:30,971 INFO L481 AbstractCegarLoop]: Abstraction has has 118 places, 257 transitions, 4245 flow [2020-10-16 05:58:30,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 05:58:30,971 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:30,971 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:30,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-16 05:58:30,971 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1825254528, now seen corresponding path program 1 times [2020-10-16 05:58:30,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:30,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696301148] [2020-10-16 05:58:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:31,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696301148] [2020-10-16 05:58:31,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398392456] [2020-10-16 05:58:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 05:58:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:31,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 05:58:31,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 05:58:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 05:58:31,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 05:58:31,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 05:58:31,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792698012] [2020-10-16 05:58:31,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 05:58:31,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:31,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 05:58:31,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-16 05:58:31,206 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:58:31,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 257 transitions, 4245 flow. Second operand 16 states. [2020-10-16 05:58:31,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:31,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:58:31,207 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:34,029 INFO L129 PetriNetUnfolder]: 11355/18487 cut-off events. [2020-10-16 05:58:34,030 INFO L130 PetriNetUnfolder]: For 186352/186352 co-relation queries the response was YES. [2020-10-16 05:58:34,162 INFO L80 FinitePrefix]: Finished finitePrefix Result has 109323 conditions, 18487 events. 11355/18487 cut-off events. For 186352/186352 co-relation queries the response was YES. Maximal size of possible extension queue 3363. Compared 175311 event pairs, 834 based on Foata normal form. 17/16057 useless extension candidates. Maximal degree in co-relation 109276. Up to 3848 conditions per place. [2020-10-16 05:58:34,220 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 210 selfloop transitions, 244 changer transitions 0/460 dead transitions. [2020-10-16 05:58:34,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 460 transitions, 7074 flow [2020-10-16 05:58:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:58:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:58:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:58:34,225 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:58:34,225 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:58:34,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:58:34,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:34,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:58:34,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:58:34,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:58:34,234 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:58:34,234 INFO L185 Difference]: Start difference. First operand has 118 places, 257 transitions, 4245 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:58:34,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 460 transitions, 7074 flow [2020-10-16 05:58:41,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 460 transitions, 6695 flow, removed 183 selfloop flow, removed 1 redundant places. [2020-10-16 05:58:41,430 INFO L241 Difference]: Finished difference. Result has 148 places, 290 transitions, 5180 flow [2020-10-16 05:58:41,430 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5180, PETRI_PLACES=148, PETRI_TRANSITIONS=290} [2020-10-16 05:58:41,430 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 114 predicate places. [2020-10-16 05:58:41,430 INFO L481 AbstractCegarLoop]: Abstraction has has 148 places, 290 transitions, 5180 flow [2020-10-16 05:58:41,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 05:58:41,430 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:41,430 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:41,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 05:58:41,632 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1033127428, now seen corresponding path program 2 times [2020-10-16 05:58:41,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:41,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874130501] [2020-10-16 05:58:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:41,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874130501] [2020-10-16 05:58:41,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:41,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:58:41,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757220505] [2020-10-16 05:58:41,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:58:41,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:41,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:58:41,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:58:41,694 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:58:41,694 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 290 transitions, 5180 flow. Second operand 9 states. [2020-10-16 05:58:41,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:41,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:58:41,695 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:45,217 INFO L129 PetriNetUnfolder]: 11378/18550 cut-off events. [2020-10-16 05:58:45,217 INFO L130 PetriNetUnfolder]: For 203823/203823 co-relation queries the response was YES. [2020-10-16 05:58:45,353 INFO L80 FinitePrefix]: Finished finitePrefix Result has 113393 conditions, 18550 events. 11378/18550 cut-off events. For 203823/203823 co-relation queries the response was YES. Maximal size of possible extension queue 3387. Compared 176191 event pairs, 837 based on Foata normal form. 17/16101 useless extension candidates. Maximal degree in co-relation 113342. Up to 3261 conditions per place. [2020-10-16 05:58:45,409 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 212 selfloop transitions, 253 changer transitions 0/471 dead transitions. [2020-10-16 05:58:45,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 471 transitions, 7554 flow [2020-10-16 05:58:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:58:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:58:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:58:45,413 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:58:45,413 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:58:45,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:58:45,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:45,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:58:45,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:58:45,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:58:45,419 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:58:45,419 INFO L185 Difference]: Start difference. First operand has 148 places, 290 transitions, 5180 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:58:45,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 471 transitions, 7554 flow [2020-10-16 05:58:55,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 471 transitions, 7069 flow, removed 32 selfloop flow, removed 20 redundant places. [2020-10-16 05:58:55,679 INFO L241 Difference]: Finished difference. Result has 159 places, 309 transitions, 5637 flow [2020-10-16 05:58:55,679 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5637, PETRI_PLACES=159, PETRI_TRANSITIONS=309} [2020-10-16 05:58:55,679 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 125 predicate places. [2020-10-16 05:58:55,679 INFO L481 AbstractCegarLoop]: Abstraction has has 159 places, 309 transitions, 5637 flow [2020-10-16 05:58:55,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:58:55,680 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:58:55,680 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:58:55,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-16 05:58:55,680 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:58:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:58:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940292, now seen corresponding path program 3 times [2020-10-16 05:58:55,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:58:55,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179390008] [2020-10-16 05:58:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:58:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:58:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:58:55,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179390008] [2020-10-16 05:58:55,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:58:55,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:58:55,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102720254] [2020-10-16 05:58:55,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:58:55,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:58:55,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:58:55,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:58:55,738 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:58:55,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 309 transitions, 5637 flow. Second operand 9 states. [2020-10-16 05:58:55,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:58:55,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:58:55,739 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:58:59,026 INFO L129 PetriNetUnfolder]: 11401/18613 cut-off events. [2020-10-16 05:58:59,026 INFO L130 PetriNetUnfolder]: For 222066/222066 co-relation queries the response was YES. [2020-10-16 05:58:59,154 INFO L80 FinitePrefix]: Finished finitePrefix Result has 117569 conditions, 18613 events. 11401/18613 cut-off events. For 222066/222066 co-relation queries the response was YES. Maximal size of possible extension queue 3411. Compared 177372 event pairs, 810 based on Foata normal form. 17/16151 useless extension candidates. Maximal degree in co-relation 117517. Up to 3271 conditions per place. [2020-10-16 05:58:59,209 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 218 selfloop transitions, 265 changer transitions 0/489 dead transitions. [2020-10-16 05:58:59,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 489 transitions, 8086 flow [2020-10-16 05:58:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:58:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:58:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:58:59,214 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:58:59,214 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:58:59,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:58:59,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:58:59,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:58:59,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:58:59,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:58:59,222 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:58:59,223 INFO L185 Difference]: Start difference. First operand has 159 places, 309 transitions, 5637 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:58:59,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 489 transitions, 8086 flow [2020-10-16 05:59:12,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 489 transitions, 7656 flow, removed 28 selfloop flow, removed 18 redundant places. [2020-10-16 05:59:12,368 INFO L241 Difference]: Finished difference. Result has 172 places, 334 transitions, 6293 flow [2020-10-16 05:59:12,369 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5221, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6293, PETRI_PLACES=172, PETRI_TRANSITIONS=334} [2020-10-16 05:59:12,369 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 138 predicate places. [2020-10-16 05:59:12,369 INFO L481 AbstractCegarLoop]: Abstraction has has 172 places, 334 transitions, 6293 flow [2020-10-16 05:59:12,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:59:12,369 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:59:12,369 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:59:12,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-16 05:59:12,369 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:59:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:59:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1204302852, now seen corresponding path program 4 times [2020-10-16 05:59:12,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:59:12,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810530191] [2020-10-16 05:59:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:59:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:59:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:59:12,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810530191] [2020-10-16 05:59:12,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:59:12,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:59:12,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397572780] [2020-10-16 05:59:12,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:59:12,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:59:12,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:59:12,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:59:12,428 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:59:12,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 334 transitions, 6293 flow. Second operand 9 states. [2020-10-16 05:59:12,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:59:12,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:59:12,429 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:59:15,568 INFO L129 PetriNetUnfolder]: 11424/18676 cut-off events. [2020-10-16 05:59:15,568 INFO L130 PetriNetUnfolder]: For 244413/244413 co-relation queries the response was YES. [2020-10-16 05:59:15,738 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121455 conditions, 18676 events. 11424/18676 cut-off events. For 244413/244413 co-relation queries the response was YES. Maximal size of possible extension queue 3435. Compared 178925 event pairs, 755 based on Foata normal form. 17/16201 useless extension candidates. Maximal degree in co-relation 121400. Up to 3281 conditions per place. [2020-10-16 05:59:15,798 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 241 selfloop transitions, 266 changer transitions 0/513 dead transitions. [2020-10-16 05:59:15,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 513 transitions, 8819 flow [2020-10-16 05:59:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:59:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:59:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:59:15,802 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:59:15,802 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:59:15,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:59:15,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:59:15,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:59:15,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:59:15,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:59:15,810 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:59:15,810 INFO L185 Difference]: Start difference. First operand has 172 places, 334 transitions, 6293 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:59:15,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 513 transitions, 8819 flow [2020-10-16 05:59:27,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 513 transitions, 8387 flow, removed 26 selfloop flow, removed 19 redundant places. [2020-10-16 05:59:27,884 INFO L241 Difference]: Finished difference. Result has 184 places, 353 transitions, 6857 flow [2020-10-16 05:59:27,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=5875, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6857, PETRI_PLACES=184, PETRI_TRANSITIONS=353} [2020-10-16 05:59:27,884 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 150 predicate places. [2020-10-16 05:59:27,885 INFO L481 AbstractCegarLoop]: Abstraction has has 184 places, 353 transitions, 6857 flow [2020-10-16 05:59:27,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:59:27,885 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:59:27,885 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:59:27,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-16 05:59:27,885 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:59:27,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:59:27,885 INFO L82 PathProgramCache]: Analyzing trace with hash -484255556, now seen corresponding path program 5 times [2020-10-16 05:59:27,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:59:27,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366335475] [2020-10-16 05:59:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:59:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:59:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:59:27,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366335475] [2020-10-16 05:59:27,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:59:27,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:59:27,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923389298] [2020-10-16 05:59:27,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:59:27,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:59:27,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:59:27,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:59:27,948 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:59:27,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 353 transitions, 6857 flow. Second operand 9 states. [2020-10-16 05:59:27,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:59:27,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:59:27,949 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:59:31,290 INFO L129 PetriNetUnfolder]: 11447/18739 cut-off events. [2020-10-16 05:59:31,290 INFO L130 PetriNetUnfolder]: For 263126/263126 co-relation queries the response was YES. [2020-10-16 05:59:31,457 INFO L80 FinitePrefix]: Finished finitePrefix Result has 125470 conditions, 18739 events. 11447/18739 cut-off events. For 263126/263126 co-relation queries the response was YES. Maximal size of possible extension queue 3459. Compared 179374 event pairs, 728 based on Foata normal form. 17/16251 useless extension candidates. Maximal degree in co-relation 125412. Up to 3291 conditions per place. [2020-10-16 05:59:31,516 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 247 selfloop transitions, 274 changer transitions 0/527 dead transitions. [2020-10-16 05:59:31,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 527 transitions, 9320 flow [2020-10-16 05:59:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:59:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:59:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:59:31,520 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:59:31,520 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:59:31,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:59:31,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:59:31,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:59:31,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:59:31,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:59:31,527 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:59:31,528 INFO L185 Difference]: Start difference. First operand has 184 places, 353 transitions, 6857 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:59:31,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 527 transitions, 9320 flow [2020-10-16 05:59:46,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 527 transitions, 8875 flow, removed 35 selfloop flow, removed 19 redundant places. [2020-10-16 05:59:46,138 INFO L241 Difference]: Finished difference. Result has 196 places, 374 transitions, 7438 flow [2020-10-16 05:59:46,139 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=6420, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7438, PETRI_PLACES=196, PETRI_TRANSITIONS=374} [2020-10-16 05:59:46,139 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 162 predicate places. [2020-10-16 05:59:46,139 INFO L481 AbstractCegarLoop]: Abstraction has has 196 places, 374 transitions, 7438 flow [2020-10-16 05:59:46,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 05:59:46,139 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 05:59:46,139 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 05:59:46,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-16 05:59:46,140 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 05:59:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 05:59:46,140 INFO L82 PathProgramCache]: Analyzing trace with hash -479612996, now seen corresponding path program 6 times [2020-10-16 05:59:46,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 05:59:46,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973360140] [2020-10-16 05:59:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 05:59:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 05:59:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 05:59:46,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973360140] [2020-10-16 05:59:46,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 05:59:46,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 05:59:46,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859016842] [2020-10-16 05:59:46,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 05:59:46,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 05:59:46,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 05:59:46,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 05:59:46,203 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 170 [2020-10-16 05:59:46,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 374 transitions, 7438 flow. Second operand 9 states. [2020-10-16 05:59:46,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 05:59:46,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 170 [2020-10-16 05:59:46,204 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 05:59:49,550 INFO L129 PetriNetUnfolder]: 11470/18802 cut-off events. [2020-10-16 05:59:49,550 INFO L130 PetriNetUnfolder]: For 284018/284018 co-relation queries the response was YES. [2020-10-16 05:59:49,743 INFO L80 FinitePrefix]: Finished finitePrefix Result has 129504 conditions, 18802 events. 11470/18802 cut-off events. For 284018/284018 co-relation queries the response was YES. Maximal size of possible extension queue 3483. Compared 179760 event pairs, 731 based on Foata normal form. 17/16307 useless extension candidates. Maximal degree in co-relation 129443. Up to 3301 conditions per place. [2020-10-16 05:59:49,805 INFO L132 encePairwiseOnDemand]: 161/170 looper letters, 249 selfloop transitions, 279 changer transitions 0/534 dead transitions. [2020-10-16 05:59:49,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 534 transitions, 9710 flow [2020-10-16 05:59:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 05:59:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 05:59:49,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3035 transitions. [2020-10-16 05:59:49,808 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6156186612576064 [2020-10-16 05:59:49,808 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3035 transitions. [2020-10-16 05:59:49,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3035 transitions. [2020-10-16 05:59:49,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 05:59:49,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3035 transitions. [2020-10-16 05:59:49,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 05:59:49,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 05:59:49,817 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 05:59:49,817 INFO L185 Difference]: Start difference. First operand has 196 places, 374 transitions, 7438 flow. Second operand 29 states and 3035 transitions. [2020-10-16 05:59:49,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 534 transitions, 9710 flow [2020-10-16 06:00:04,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 534 transitions, 9255 flow, removed 27 selfloop flow, removed 20 redundant places. [2020-10-16 06:00:04,732 INFO L241 Difference]: Finished difference. Result has 207 places, 387 transitions, 7869 flow [2020-10-16 06:00:04,732 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=6989, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7869, PETRI_PLACES=207, PETRI_TRANSITIONS=387} [2020-10-16 06:00:04,733 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 173 predicate places. [2020-10-16 06:00:04,733 INFO L481 AbstractCegarLoop]: Abstraction has has 207 places, 387 transitions, 7869 flow [2020-10-16 06:00:04,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 06:00:04,733 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:04,733 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:04,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-16 06:00:04,733 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 06:00:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:04,734 INFO L82 PathProgramCache]: Analyzing trace with hash -612301355, now seen corresponding path program 1 times [2020-10-16 06:00:04,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:04,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866175320] [2020-10-16 06:00:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 06:00:04,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 06:00:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 06:00:04,752 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 06:00:04,767 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 06:00:04,767 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 06:00:04,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-16 06:00:04,768 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-10-16 06:00:04,772 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 06:00:04,772 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 06:00:04,790 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,791 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,791 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,792 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,792 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,792 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,793 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,794 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,794 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,794 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,794 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,795 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,795 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,795 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,796 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,797 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,797 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,797 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,798 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,798 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,799 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,799 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,800 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,800 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,801 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,802 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,802 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,802 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,803 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,803 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,804 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,804 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,804 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,804 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,804 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,804 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,805 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,805 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,808 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,808 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,809 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,809 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,813 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,815 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,815 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,821 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,822 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,822 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,823 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,823 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,824 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,824 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,824 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,824 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 06:00:04,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 06:00:04,825 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 06:00:04,825 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 06:00:04,825 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 06:00:04,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 06:00:04,826 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 06:00:04,826 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 06:00:04,826 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 06:00:04,826 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 06:00:04,830 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 06:00:04,841 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 06:00:04,841 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 06:00:04,842 INFO L80 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 251 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 179. Up to 12 conditions per place. [2020-10-16 06:00:04,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 122 transitions, 334 flow [2020-10-16 06:00:04,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:04,844 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 06:00:04,844 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:04,844 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:04,844 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 210 flow [2020-10-16 06:00:04,854 INFO L129 PetriNetUnfolder]: 8/152 cut-off events. [2020-10-16 06:00:04,855 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 06:00:04,855 INFO L80 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 152 events. 8/152 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 253 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 153. Up to 12 conditions per place. [2020-10-16 06:00:04,859 INFO L117 LiptonReduction]: Number of co-enabled transitions 2264 [2020-10-16 06:00:05,939 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-10-16 06:00:06,200 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-16 06:00:06,333 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-16 06:00:06,342 INFO L132 LiptonReduction]: Checked pairs total: 3488 [2020-10-16 06:00:06,342 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 06:00:06,342 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1498 [2020-10-16 06:00:06,343 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2020-10-16 06:00:06,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 06:00:06,343 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:06,343 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2020-10-16 06:00:06,343 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:06,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:06,344 INFO L82 PathProgramCache]: Analyzing trace with hash 921412, now seen corresponding path program 1 times [2020-10-16 06:00:06,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:06,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22851951] [2020-10-16 06:00:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:00:06,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22851951] [2020-10-16 06:00:06,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:06,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 06:00:06,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427185890] [2020-10-16 06:00:06,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 06:00:06,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 06:00:06,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 06:00:06,361 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 185 [2020-10-16 06:00:06,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states. [2020-10-16 06:00:06,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:06,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 185 [2020-10-16 06:00:06,362 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:07,021 INFO L129 PetriNetUnfolder]: 9406/12179 cut-off events. [2020-10-16 06:00:07,021 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 06:00:07,038 INFO L80 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 12179 events. 9406/12179 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 944. Compared 66749 event pairs, 1879 based on Foata normal form. 0/10226 useless extension candidates. Maximal degree in co-relation 24362. Up to 11075 conditions per place. [2020-10-16 06:00:07,064 INFO L132 encePairwiseOnDemand]: 178/185 looper letters, 22 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2020-10-16 06:00:07,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 38 transitions, 180 flow [2020-10-16 06:00:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 06:00:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 06:00:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2020-10-16 06:00:07,065 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6738738738738739 [2020-10-16 06:00:07,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2020-10-16 06:00:07,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2020-10-16 06:00:07,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:07,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2020-10-16 06:00:07,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 06:00:07,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 06:00:07,067 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 06:00:07,067 INFO L185 Difference]: Start difference. First operand has 39 places, 25 transitions, 98 flow. Second operand 3 states and 374 transitions. [2020-10-16 06:00:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 38 transitions, 180 flow [2020-10-16 06:00:07,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 38 transitions, 159 flow, removed 10 selfloop flow, removed 1 redundant places. [2020-10-16 06:00:07,068 INFO L241 Difference]: Finished difference. Result has 41 places, 30 transitions, 117 flow [2020-10-16 06:00:07,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2020-10-16 06:00:07,068 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2020-10-16 06:00:07,068 INFO L481 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 117 flow [2020-10-16 06:00:07,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 06:00:07,068 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:07,069 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:07,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-16 06:00:07,069 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1176697087, now seen corresponding path program 1 times [2020-10-16 06:00:07,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:07,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399977074] [2020-10-16 06:00:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 06:00:07,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399977074] [2020-10-16 06:00:07,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:07,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:00:07,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439733177] [2020-10-16 06:00:07,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:00:07,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:07,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:00:07,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:00:07,103 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 06:00:07,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 117 flow. Second operand 5 states. [2020-10-16 06:00:07,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:07,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 06:00:07,104 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:08,270 INFO L129 PetriNetUnfolder]: 15176/20092 cut-off events. [2020-10-16 06:00:08,270 INFO L130 PetriNetUnfolder]: For 1041/1041 co-relation queries the response was YES. [2020-10-16 06:00:08,331 INFO L80 FinitePrefix]: Finished finitePrefix Result has 49217 conditions, 20092 events. 15176/20092 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 1755. Compared 126905 event pairs, 2315 based on Foata normal form. 323/18514 useless extension candidates. Maximal degree in co-relation 49202. Up to 9537 conditions per place. [2020-10-16 06:00:08,388 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 48 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2020-10-16 06:00:08,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 363 flow [2020-10-16 06:00:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:00:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:00:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 737 transitions. [2020-10-16 06:00:08,390 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.663963963963964 [2020-10-16 06:00:08,390 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 737 transitions. [2020-10-16 06:00:08,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 737 transitions. [2020-10-16 06:00:08,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:08,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 737 transitions. [2020-10-16 06:00:08,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:00:08,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:00:08,396 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:00:08,396 INFO L185 Difference]: Start difference. First operand has 41 places, 30 transitions, 117 flow. Second operand 6 states and 737 transitions. [2020-10-16 06:00:08,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 73 transitions, 363 flow [2020-10-16 06:00:08,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 73 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 06:00:08,399 INFO L241 Difference]: Finished difference. Result has 48 places, 40 transitions, 216 flow [2020-10-16 06:00:08,399 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2020-10-16 06:00:08,399 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2020-10-16 06:00:08,400 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 216 flow [2020-10-16 06:00:08,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:00:08,400 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:08,400 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:08,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-16 06:00:08,400 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:08,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:08,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1772932976, now seen corresponding path program 1 times [2020-10-16 06:00:08,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:08,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540006495] [2020-10-16 06:00:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 06:00:08,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540006495] [2020-10-16 06:00:08,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:08,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:00:08,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245167397] [2020-10-16 06:00:08,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:00:08,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:08,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:00:08,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:00:08,429 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 185 [2020-10-16 06:00:08,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 216 flow. Second operand 5 states. [2020-10-16 06:00:08,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:08,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 185 [2020-10-16 06:00:08,430 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:10,343 INFO L129 PetriNetUnfolder]: 24103/32563 cut-off events. [2020-10-16 06:00:10,343 INFO L130 PetriNetUnfolder]: For 14291/14291 co-relation queries the response was YES. [2020-10-16 06:00:10,455 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97846 conditions, 32563 events. 24103/32563 cut-off events. For 14291/14291 co-relation queries the response was YES. Maximal size of possible extension queue 3152. Compared 228520 event pairs, 3971 based on Foata normal form. 497/29900 useless extension candidates. Maximal degree in co-relation 97827. Up to 16050 conditions per place. [2020-10-16 06:00:10,561 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 58 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2020-10-16 06:00:10,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 92 transitions, 609 flow [2020-10-16 06:00:10,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:00:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:00:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 744 transitions. [2020-10-16 06:00:10,563 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6702702702702703 [2020-10-16 06:00:10,563 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 744 transitions. [2020-10-16 06:00:10,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 744 transitions. [2020-10-16 06:00:10,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:10,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 744 transitions. [2020-10-16 06:00:10,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:00:10,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:00:10,565 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:00:10,565 INFO L185 Difference]: Start difference. First operand has 48 places, 40 transitions, 216 flow. Second operand 6 states and 744 transitions. [2020-10-16 06:00:10,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 92 transitions, 609 flow [2020-10-16 06:00:10,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 568 flow, removed 8 selfloop flow, removed 2 redundant places. [2020-10-16 06:00:10,684 INFO L241 Difference]: Finished difference. Result has 54 places, 55 transitions, 378 flow [2020-10-16 06:00:10,684 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2020-10-16 06:00:10,684 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2020-10-16 06:00:10,684 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 378 flow [2020-10-16 06:00:10,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:00:10,685 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:10,685 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:10,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-16 06:00:10,685 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:10,685 INFO L82 PathProgramCache]: Analyzing trace with hash 323960811, now seen corresponding path program 1 times [2020-10-16 06:00:10,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:10,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559014208] [2020-10-16 06:00:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 06:00:10,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559014208] [2020-10-16 06:00:10,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128291506] [2020-10-16 06:00:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:00:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:10,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 06:00:10,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:00:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-16 06:00:10,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:00:10,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 06:00:10,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563604580] [2020-10-16 06:00:10,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 06:00:10,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 06:00:10,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 06:00:10,874 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:00:10,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 378 flow. Second operand 12 states. [2020-10-16 06:00:10,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:10,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:00:10,876 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:13,393 INFO L129 PetriNetUnfolder]: 25758/34987 cut-off events. [2020-10-16 06:00:13,394 INFO L130 PetriNetUnfolder]: For 32543/32543 co-relation queries the response was YES. [2020-10-16 06:00:13,539 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121474 conditions, 34987 events. 25758/34987 cut-off events. For 32543/32543 co-relation queries the response was YES. Maximal size of possible extension queue 3461. Compared 251257 event pairs, 3572 based on Foata normal form. 107/31691 useless extension candidates. Maximal degree in co-relation 121452. Up to 12942 conditions per place. [2020-10-16 06:00:13,653 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 101 selfloop transitions, 47 changer transitions 0/156 dead transitions. [2020-10-16 06:00:13,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 1066 flow [2020-10-16 06:00:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:00:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:00:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 06:00:13,655 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 06:00:13,655 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 06:00:13,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 06:00:13,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:13,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 06:00:13,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:00:13,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:00:13,658 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:00:13,658 INFO L185 Difference]: Start difference. First operand has 54 places, 55 transitions, 378 flow. Second operand 13 states and 1574 transitions. [2020-10-16 06:00:13,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 1066 flow [2020-10-16 06:00:14,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 156 transitions, 1030 flow, removed 14 selfloop flow, removed 1 redundant places. [2020-10-16 06:00:14,304 INFO L241 Difference]: Finished difference. Result has 68 places, 71 transitions, 604 flow [2020-10-16 06:00:14,304 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2020-10-16 06:00:14,304 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2020-10-16 06:00:14,304 INFO L481 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 604 flow [2020-10-16 06:00:14,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 06:00:14,305 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:14,305 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:14,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:00:14,511 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:14,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1313409279, now seen corresponding path program 2 times [2020-10-16 06:00:14,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:14,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878958321] [2020-10-16 06:00:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 06:00:14,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878958321] [2020-10-16 06:00:14,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:14,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 06:00:14,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503531290] [2020-10-16 06:00:14,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 06:00:14,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:14,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 06:00:14,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 06:00:14,556 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:00:14,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 604 flow. Second operand 7 states. [2020-10-16 06:00:14,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:14,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:00:14,557 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:17,795 INFO L129 PetriNetUnfolder]: 27412/37431 cut-off events. [2020-10-16 06:00:17,796 INFO L130 PetriNetUnfolder]: For 60133/60133 co-relation queries the response was YES. [2020-10-16 06:00:17,935 INFO L80 FinitePrefix]: Finished finitePrefix Result has 145813 conditions, 37431 events. 27412/37431 cut-off events. For 60133/60133 co-relation queries the response was YES. Maximal size of possible extension queue 3770. Compared 274003 event pairs, 3717 based on Foata normal form. 107/33822 useless extension candidates. Maximal degree in co-relation 145787. Up to 11975 conditions per place. [2020-10-16 06:00:18,047 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 105 selfloop transitions, 54 changer transitions 0/167 dead transitions. [2020-10-16 06:00:18,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1319 flow [2020-10-16 06:00:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:00:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:00:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2020-10-16 06:00:18,060 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6544698544698545 [2020-10-16 06:00:18,060 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2020-10-16 06:00:18,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2020-10-16 06:00:18,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:18,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2020-10-16 06:00:18,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:00:18,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:00:18,069 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:00:18,069 INFO L185 Difference]: Start difference. First operand has 68 places, 71 transitions, 604 flow. Second operand 13 states and 1574 transitions. [2020-10-16 06:00:18,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1319 flow [2020-10-16 06:00:20,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 167 transitions, 1214 flow, removed 10 selfloop flow, removed 7 redundant places. [2020-10-16 06:00:20,122 INFO L241 Difference]: Finished difference. Result has 76 places, 83 transitions, 759 flow [2020-10-16 06:00:20,122 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=759, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2020-10-16 06:00:20,122 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2020-10-16 06:00:20,122 INFO L481 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 759 flow [2020-10-16 06:00:20,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 06:00:20,122 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:20,122 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:20,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-16 06:00:20,122 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1064498480, now seen corresponding path program 1 times [2020-10-16 06:00:20,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:20,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677241492] [2020-10-16 06:00:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:00:20,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677241492] [2020-10-16 06:00:20,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:00:20,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:00:20,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125741832] [2020-10-16 06:00:20,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:00:20,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:00:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:00:20,155 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 06:00:20,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 759 flow. Second operand 5 states. [2020-10-16 06:00:20,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:20,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 06:00:20,156 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:27,923 INFO L129 PetriNetUnfolder]: 42399/59055 cut-off events. [2020-10-16 06:00:27,924 INFO L130 PetriNetUnfolder]: For 161057/161063 co-relation queries the response was YES. [2020-10-16 06:00:28,179 INFO L80 FinitePrefix]: Finished finitePrefix Result has 255881 conditions, 59055 events. 42399/59055 cut-off events. For 161057/161063 co-relation queries the response was YES. Maximal size of possible extension queue 6543. Compared 473185 event pairs, 6895 based on Foata normal form. 856/53802 useless extension candidates. Maximal degree in co-relation 255853. Up to 30189 conditions per place. [2020-10-16 06:00:28,368 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 121 selfloop transitions, 49 changer transitions 0/179 dead transitions. [2020-10-16 06:00:28,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 179 transitions, 1941 flow [2020-10-16 06:00:28,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:00:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:00:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 06:00:28,369 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 06:00:28,369 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 06:00:28,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 06:00:28,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:28,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 06:00:28,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:00:28,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:00:28,371 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:00:28,371 INFO L185 Difference]: Start difference. First operand has 76 places, 83 transitions, 759 flow. Second operand 6 states and 738 transitions. [2020-10-16 06:00:28,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 179 transitions, 1941 flow [2020-10-16 06:00:32,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 179 transitions, 1718 flow, removed 22 selfloop flow, removed 9 redundant places. [2020-10-16 06:00:32,314 INFO L241 Difference]: Finished difference. Result has 75 places, 115 transitions, 1155 flow [2020-10-16 06:00:32,314 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1155, PETRI_PLACES=75, PETRI_TRANSITIONS=115} [2020-10-16 06:00:32,314 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2020-10-16 06:00:32,314 INFO L481 AbstractCegarLoop]: Abstraction has has 75 places, 115 transitions, 1155 flow [2020-10-16 06:00:32,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:00:32,314 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:32,314 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:32,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-16 06:00:32,315 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:32,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1896427507, now seen corresponding path program 1 times [2020-10-16 06:00:32,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:32,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138804453] [2020-10-16 06:00:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:00:32,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138804453] [2020-10-16 06:00:32,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36050421] [2020-10-16 06:00:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:00:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:32,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 06:00:32,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:00:32,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:00:32,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:00:32,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 06:00:32,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948222228] [2020-10-16 06:00:32,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 06:00:32,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:32,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 06:00:32,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 06:00:32,495 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 06:00:32,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 115 transitions, 1155 flow. Second operand 12 states. [2020-10-16 06:00:32,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:32,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 06:00:32,496 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:38,447 INFO L129 PetriNetUnfolder]: 45547/63826 cut-off events. [2020-10-16 06:00:38,448 INFO L130 PetriNetUnfolder]: For 212873/212879 co-relation queries the response was YES. [2020-10-16 06:00:38,784 INFO L80 FinitePrefix]: Finished finitePrefix Result has 294881 conditions, 63826 events. 45547/63826 cut-off events. For 212873/212879 co-relation queries the response was YES. Maximal size of possible extension queue 7232. Compared 522165 event pairs, 6275 based on Foata normal form. 233/57404 useless extension candidates. Maximal degree in co-relation 294850. Up to 20346 conditions per place. [2020-10-16 06:00:39,007 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 142 selfloop transitions, 97 changer transitions 0/247 dead transitions. [2020-10-16 06:00:39,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 247 transitions, 2533 flow [2020-10-16 06:00:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:00:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:00:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 06:00:39,009 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 06:00:39,009 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 06:00:39,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 06:00:39,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:39,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 06:00:39,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:00:39,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:00:39,013 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:00:39,013 INFO L185 Difference]: Start difference. First operand has 75 places, 115 transitions, 1155 flow. Second operand 13 states and 1563 transitions. [2020-10-16 06:00:39,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 247 transitions, 2533 flow [2020-10-16 06:00:49,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 247 transitions, 2444 flow, removed 38 selfloop flow, removed 1 redundant places. [2020-10-16 06:00:49,015 INFO L241 Difference]: Finished difference. Result has 89 places, 146 transitions, 1704 flow [2020-10-16 06:00:49,015 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1704, PETRI_PLACES=89, PETRI_TRANSITIONS=146} [2020-10-16 06:00:49,015 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2020-10-16 06:00:49,015 INFO L481 AbstractCegarLoop]: Abstraction has has 89 places, 146 transitions, 1704 flow [2020-10-16 06:00:49,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 06:00:49,015 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:00:49,015 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:00:49,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 06:00:49,216 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:00:49,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:00:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1954579539, now seen corresponding path program 1 times [2020-10-16 06:00:49,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:00:49,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702754988] [2020-10-16 06:00:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:00:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:00:49,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702754988] [2020-10-16 06:00:49,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859766028] [2020-10-16 06:00:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:00:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:00:49,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 06:00:49,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:00:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:00:49,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:00:49,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 06:00:49,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096993831] [2020-10-16 06:00:49,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 06:00:49,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:00:49,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 06:00:49,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-16 06:00:49,404 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:00:49,404 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 146 transitions, 1704 flow. Second operand 12 states. [2020-10-16 06:00:49,404 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:00:49,404 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:00:49,404 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:00:55,535 INFO L129 PetriNetUnfolder]: 48388/68199 cut-off events. [2020-10-16 06:00:55,536 INFO L130 PetriNetUnfolder]: For 314101/314101 co-relation queries the response was YES. [2020-10-16 06:00:55,984 INFO L80 FinitePrefix]: Finished finitePrefix Result has 338405 conditions, 68199 events. 48388/68199 cut-off events. For 314101/314101 co-relation queries the response was YES. Maximal size of possible extension queue 7871. Compared 568376 event pairs, 6048 based on Foata normal form. 227/61266 useless extension candidates. Maximal degree in co-relation 338370. Up to 18936 conditions per place. [2020-10-16 06:00:56,239 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 168 selfloop transitions, 110 changer transitions 0/286 dead transitions. [2020-10-16 06:00:56,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 286 transitions, 3342 flow [2020-10-16 06:00:56,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:00:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:00:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 06:00:56,241 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 06:00:56,241 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 06:00:56,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 06:00:56,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:00:56,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 06:00:56,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:00:56,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:00:56,244 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:00:56,244 INFO L185 Difference]: Start difference. First operand has 89 places, 146 transitions, 1704 flow. Second operand 13 states and 1577 transitions. [2020-10-16 06:00:56,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 286 transitions, 3342 flow [2020-10-16 06:01:21,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 286 transitions, 3227 flow, removed 36 selfloop flow, removed 3 redundant places. [2020-10-16 06:01:21,205 INFO L241 Difference]: Finished difference. Result has 101 places, 181 transitions, 2342 flow [2020-10-16 06:01:21,205 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2342, PETRI_PLACES=101, PETRI_TRANSITIONS=181} [2020-10-16 06:01:21,206 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2020-10-16 06:01:21,206 INFO L481 AbstractCegarLoop]: Abstraction has has 101 places, 181 transitions, 2342 flow [2020-10-16 06:01:21,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 06:01:21,206 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:01:21,206 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:01:21,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 06:01:21,413 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:01:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:01:21,413 INFO L82 PathProgramCache]: Analyzing trace with hash 780837277, now seen corresponding path program 2 times [2020-10-16 06:01:21,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:01:21,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065763993] [2020-10-16 06:01:21,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:01:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:01:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:01:21,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065763993] [2020-10-16 06:01:21,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:01:21,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 06:01:21,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785343174] [2020-10-16 06:01:21,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 06:01:21,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:01:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 06:01:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 06:01:21,459 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 185 [2020-10-16 06:01:21,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 181 transitions, 2342 flow. Second operand 7 states. [2020-10-16 06:01:21,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:01:21,459 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 185 [2020-10-16 06:01:21,460 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:01:30,415 INFO L129 PetriNetUnfolder]: 50681/71686 cut-off events. [2020-10-16 06:01:30,415 INFO L130 PetriNetUnfolder]: For 413774/413774 co-relation queries the response was YES. [2020-10-16 06:01:30,934 INFO L80 FinitePrefix]: Finished finitePrefix Result has 383881 conditions, 71686 events. 50681/71686 cut-off events. For 413774/413774 co-relation queries the response was YES. Maximal size of possible extension queue 8401. Compared 605472 event pairs, 6363 based on Foata normal form. 175/64277 useless extension candidates. Maximal degree in co-relation 383843. Up to 19386 conditions per place. [2020-10-16 06:01:31,209 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 177 selfloop transitions, 124 changer transitions 0/309 dead transitions. [2020-10-16 06:01:31,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 309 transitions, 3914 flow [2020-10-16 06:01:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:01:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:01:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1577 transitions. [2020-10-16 06:01:31,211 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6557172557172557 [2020-10-16 06:01:31,211 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1577 transitions. [2020-10-16 06:01:31,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1577 transitions. [2020-10-16 06:01:31,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:01:31,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1577 transitions. [2020-10-16 06:01:31,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:01:31,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:01:31,214 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:01:31,214 INFO L185 Difference]: Start difference. First operand has 101 places, 181 transitions, 2342 flow. Second operand 13 states and 1577 transitions. [2020-10-16 06:01:31,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 309 transitions, 3914 flow [2020-10-16 06:02:10,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 309 transitions, 3850 flow, removed 29 selfloop flow, removed 1 redundant places. [2020-10-16 06:02:10,809 INFO L241 Difference]: Finished difference. Result has 115 places, 204 transitions, 2919 flow [2020-10-16 06:02:10,809 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2919, PETRI_PLACES=115, PETRI_TRANSITIONS=204} [2020-10-16 06:02:10,809 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 76 predicate places. [2020-10-16 06:02:10,809 INFO L481 AbstractCegarLoop]: Abstraction has has 115 places, 204 transitions, 2919 flow [2020-10-16 06:02:10,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 06:02:10,809 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:02:10,809 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:02:10,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-16 06:02:10,809 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:02:10,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:02:10,810 INFO L82 PathProgramCache]: Analyzing trace with hash 780840129, now seen corresponding path program 2 times [2020-10-16 06:02:10,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:02:10,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714737016] [2020-10-16 06:02:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:02:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:02:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:02:10,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714737016] [2020-10-16 06:02:10,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:02:10,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 06:02:10,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261028174] [2020-10-16 06:02:10,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 06:02:10,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:02:10,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 06:02:10,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-16 06:02:10,850 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 185 [2020-10-16 06:02:10,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 204 transitions, 2919 flow. Second operand 7 states. [2020-10-16 06:02:10,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:02:10,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 185 [2020-10-16 06:02:10,851 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:02:19,511 INFO L129 PetriNetUnfolder]: 53510/76037 cut-off events. [2020-10-16 06:02:19,511 INFO L130 PetriNetUnfolder]: For 545023/545029 co-relation queries the response was YES. [2020-10-16 06:02:20,037 INFO L80 FinitePrefix]: Finished finitePrefix Result has 435060 conditions, 76037 events. 53510/76037 cut-off events. For 545023/545029 co-relation queries the response was YES. Maximal size of possible extension queue 9094. Compared 651679 event pairs, 6771 based on Foata normal form. 233/68117 useless extension candidates. Maximal degree in co-relation 435018. Up to 20686 conditions per place. [2020-10-16 06:02:20,323 INFO L132 encePairwiseOnDemand]: 176/185 looper letters, 183 selfloop transitions, 140 changer transitions 0/331 dead transitions. [2020-10-16 06:02:20,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 331 transitions, 4669 flow [2020-10-16 06:02:20,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 06:02:20,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-16 06:02:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1563 transitions. [2020-10-16 06:02:20,325 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6498960498960499 [2020-10-16 06:02:20,325 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1563 transitions. [2020-10-16 06:02:20,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1563 transitions. [2020-10-16 06:02:20,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:02:20,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1563 transitions. [2020-10-16 06:02:20,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-16 06:02:20,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-16 06:02:20,327 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-16 06:02:20,327 INFO L185 Difference]: Start difference. First operand has 115 places, 204 transitions, 2919 flow. Second operand 13 states and 1563 transitions. [2020-10-16 06:02:20,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 331 transitions, 4669 flow [2020-10-16 06:03:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 331 transitions, 4363 flow, removed 41 selfloop flow, removed 8 redundant places. [2020-10-16 06:03:09,873 INFO L241 Difference]: Finished difference. Result has 122 places, 233 transitions, 3462 flow [2020-10-16 06:03:09,873 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3462, PETRI_PLACES=122, PETRI_TRANSITIONS=233} [2020-10-16 06:03:09,873 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2020-10-16 06:03:09,874 INFO L481 AbstractCegarLoop]: Abstraction has has 122 places, 233 transitions, 3462 flow [2020-10-16 06:03:09,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 06:03:09,874 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:03:09,874 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:03:09,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-16 06:03:09,874 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:03:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:03:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1561506739, now seen corresponding path program 1 times [2020-10-16 06:03:09,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:03:09,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102231766] [2020-10-16 06:03:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:03:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:03:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-16 06:03:09,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102231766] [2020-10-16 06:03:09,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:03:09,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 06:03:09,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541184596] [2020-10-16 06:03:09,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 06:03:09,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:03:09,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 06:03:09,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 06:03:09,918 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 185 [2020-10-16 06:03:09,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 233 transitions, 3462 flow. Second operand 5 states. [2020-10-16 06:03:09,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:03:09,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 185 [2020-10-16 06:03:09,919 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:03:30,846 INFO L129 PetriNetUnfolder]: 80365/116510 cut-off events. [2020-10-16 06:03:30,846 INFO L130 PetriNetUnfolder]: For 1107269/1107308 co-relation queries the response was YES. [2020-10-16 06:03:31,701 INFO L80 FinitePrefix]: Finished finitePrefix Result has 706460 conditions, 116510 events. 80365/116510 cut-off events. For 1107269/1107308 co-relation queries the response was YES. Maximal size of possible extension queue 14934. Compared 1084593 event pairs, 12119 based on Foata normal form. 1656/105260 useless extension candidates. Maximal degree in co-relation 706415. Up to 62044 conditions per place. [2020-10-16 06:03:32,143 INFO L132 encePairwiseOnDemand]: 177/185 looper letters, 370 selfloop transitions, 106 changer transitions 0/485 dead transitions. [2020-10-16 06:03:32,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 485 transitions, 8217 flow [2020-10-16 06:03:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 06:03:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-16 06:03:32,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2020-10-16 06:03:32,144 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2020-10-16 06:03:32,144 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2020-10-16 06:03:32,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2020-10-16 06:03:32,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:03:32,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2020-10-16 06:03:32,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-16 06:03:32,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-16 06:03:32,146 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-16 06:03:32,146 INFO L185 Difference]: Start difference. First operand has 122 places, 233 transitions, 3462 flow. Second operand 6 states and 738 transitions. [2020-10-16 06:03:32,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 485 transitions, 8217 flow [2020-10-16 06:06:12,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 485 transitions, 7867 flow, removed 60 selfloop flow, removed 7 redundant places. [2020-10-16 06:06:12,337 INFO L241 Difference]: Finished difference. Result has 123 places, 310 transitions, 5004 flow [2020-10-16 06:06:12,337 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5004, PETRI_PLACES=123, PETRI_TRANSITIONS=310} [2020-10-16 06:06:12,337 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2020-10-16 06:06:12,337 INFO L481 AbstractCegarLoop]: Abstraction has has 123 places, 310 transitions, 5004 flow [2020-10-16 06:06:12,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 06:06:12,338 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:06:12,338 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:06:12,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-16 06:06:12,338 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:06:12,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:06:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1022812594, now seen corresponding path program 1 times [2020-10-16 06:06:12,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:06:12,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200584302] [2020-10-16 06:06:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:06:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:06:12,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200584302] [2020-10-16 06:06:12,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271875708] [2020-10-16 06:06:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:06:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:06:12,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 06:06:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 06:06:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-16 06:06:12,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 06:06:12,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 06:06:12,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470067838] [2020-10-16 06:06:12,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 06:06:12,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:06:12,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 06:06:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-16 06:06:12,591 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2020-10-16 06:06:12,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 310 transitions, 5004 flow. Second operand 16 states. [2020-10-16 06:06:12,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:06:12,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2020-10-16 06:06:12,593 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:06:29,020 INFO L129 PetriNetUnfolder]: 80442/116626 cut-off events. [2020-10-16 06:06:29,020 INFO L130 PetriNetUnfolder]: For 1194118/1194118 co-relation queries the response was YES. [2020-10-16 06:06:30,008 INFO L80 FinitePrefix]: Finished finitePrefix Result has 745109 conditions, 116626 events. 80442/116626 cut-off events. For 1194118/1194118 co-relation queries the response was YES. Maximal size of possible extension queue 15075. Compared 1099618 event pairs, 9598 based on Foata normal form. 57/103793 useless extension candidates. Maximal degree in co-relation 745061. Up to 31549 conditions per place. [2020-10-16 06:06:30,481 INFO L132 encePairwiseOnDemand]: 175/185 looper letters, 272 selfloop transitions, 297 changer transitions 0/576 dead transitions. [2020-10-16 06:06:30,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 576 transitions, 8806 flow [2020-10-16 06:06:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 06:06:30,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 06:06:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3418 transitions. [2020-10-16 06:06:30,485 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6370922646784716 [2020-10-16 06:06:30,486 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3418 transitions. [2020-10-16 06:06:30,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3418 transitions. [2020-10-16 06:06:30,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:06:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3418 transitions. [2020-10-16 06:06:30,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 06:06:30,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 06:06:30,493 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 06:06:30,493 INFO L185 Difference]: Start difference. First operand has 123 places, 310 transitions, 5004 flow. Second operand 29 states and 3418 transitions. [2020-10-16 06:06:30,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 576 transitions, 8806 flow [2020-10-16 06:10:18,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 576 transitions, 8259 flow, removed 263 selfloop flow, removed 1 redundant places. [2020-10-16 06:10:18,715 INFO L241 Difference]: Finished difference. Result has 153 places, 350 transitions, 6137 flow [2020-10-16 06:10:18,715 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6137, PETRI_PLACES=153, PETRI_TRANSITIONS=350} [2020-10-16 06:10:18,715 INFO L342 CegarLoopForPetriNet]: 39 programPoint places, 114 predicate places. [2020-10-16 06:10:18,715 INFO L481 AbstractCegarLoop]: Abstraction has has 153 places, 350 transitions, 6137 flow [2020-10-16 06:10:18,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 06:10:18,716 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 06:10:18,716 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 06:10:18,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 06:10:18,917 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 06:10:18,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 06:10:18,917 INFO L82 PathProgramCache]: Analyzing trace with hash 531135342, now seen corresponding path program 2 times [2020-10-16 06:10:18,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 06:10:18,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938940685] [2020-10-16 06:10:18,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 06:10:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 06:10:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-16 06:10:18,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938940685] [2020-10-16 06:10:18,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 06:10:18,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-16 06:10:18,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953566891] [2020-10-16 06:10:18,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 06:10:18,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 06:10:18,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 06:10:18,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-16 06:10:18,978 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 185 [2020-10-16 06:10:18,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 350 transitions, 6137 flow. Second operand 9 states. [2020-10-16 06:10:18,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 06:10:18,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 185 [2020-10-16 06:10:18,979 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 06:10:36,844 INFO L129 PetriNetUnfolder]: 80837/117329 cut-off events. [2020-10-16 06:10:36,844 INFO L130 PetriNetUnfolder]: For 1404983/1404983 co-relation queries the response was YES. [2020-10-16 06:10:37,919 INFO L80 FinitePrefix]: Finished finitePrefix Result has 774746 conditions, 117329 events. 80837/117329 cut-off events. For 1404983/1404983 co-relation queries the response was YES. Maximal size of possible extension queue 15216. Compared 1108346 event pairs, 9642 based on Foata normal form. 57/104389 useless extension candidates. Maximal degree in co-relation 774694. Up to 27845 conditions per place. [2020-10-16 06:10:40,219 INFO L132 encePairwiseOnDemand]: 175/185 looper letters, 277 selfloop transitions, 309 changer transitions 0/593 dead transitions. [2020-10-16 06:10:40,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 593 transitions, 9409 flow [2020-10-16 06:10:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-16 06:10:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-16 06:10:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3418 transitions. [2020-10-16 06:10:40,223 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6370922646784716 [2020-10-16 06:10:40,224 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3418 transitions. [2020-10-16 06:10:40,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3418 transitions. [2020-10-16 06:10:40,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 06:10:40,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3418 transitions. [2020-10-16 06:10:40,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 30 states. [2020-10-16 06:10:40,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 30 states. [2020-10-16 06:10:40,229 INFO L81 ComplementDD]: Finished complementDD. Result 30 states. [2020-10-16 06:10:40,229 INFO L185 Difference]: Start difference. First operand has 153 places, 350 transitions, 6137 flow. Second operand 29 states and 3418 transitions. [2020-10-16 06:10:40,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 593 transitions, 9409 flow Received shutdown request... [2020-10-16 06:11:27,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-16 06:11:27,237 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 06:11:27,239 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 06:11:27,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 06:11:27 BasicIcfg [2020-10-16 06:11:27,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 06:11:27,241 INFO L168 Benchmark]: Toolchain (without parser) took 817262.20 ms. Allocated memory was 249.6 MB in the beginning and 5.7 GB in the end (delta: 5.4 GB). Free memory was 204.6 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.9 GB. Max. memory is 14.2 GB. [2020-10-16 06:11:27,241 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 14.2 GB. [2020-10-16 06:11:27,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.33 ms. Allocated memory was 249.6 MB in the beginning and 310.9 MB in the end (delta: 61.3 MB). Free memory was 204.6 MB in the beginning and 267.7 MB in the end (delta: -63.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:27,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.06 ms. Allocated memory is still 310.9 MB. Free memory was 267.7 MB in the beginning and 265.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:27,242 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 ms. Allocated memory is still 310.9 MB. Free memory was 265.2 MB in the beginning and 263.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:27,242 INFO L168 Benchmark]: RCFGBuilder took 395.92 ms. Allocated memory is still 310.9 MB. Free memory was 263.5 MB in the beginning and 243.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 14.2 GB. [2020-10-16 06:11:27,243 INFO L168 Benchmark]: TraceAbstraction took 816134.04 ms. Allocated memory was 310.9 MB in the beginning and 5.7 GB in the end (delta: 5.4 GB). Free memory was 242.4 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.8 GB. Max. memory is 14.2 GB. [2020-10-16 06:11:27,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 249.6 MB. Free memory was 227.6 MB in the beginning and 226.8 MB in the end (delta: 838.8 kB). Peak memory consumption was 838.8 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 654.33 ms. Allocated memory was 249.6 MB in the beginning and 310.9 MB in the end (delta: 61.3 MB). Free memory was 204.6 MB in the beginning and 267.7 MB in the end (delta: -63.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.06 ms. Allocated memory is still 310.9 MB. Free memory was 267.7 MB in the beginning and 265.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 27.15 ms. Allocated memory is still 310.9 MB. Free memory was 265.2 MB in the beginning and 263.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 395.92 ms. Allocated memory is still 310.9 MB. Free memory was 263.5 MB in the beginning and 243.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 14.2 GB. * TraceAbstraction took 816134.04 ms. Allocated memory was 310.9 MB in the beginning and 5.7 GB in the end (delta: 5.4 GB). Free memory was 242.4 MB in the beginning and 2.9 GB in the end (delta: -2.7 GB). Peak memory consumption was 4.8 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 363 VarBasedMoverChecksPositive, 3 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 3 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 3 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.6s, 60 PlacesBefore, 17 PlacesAfterwards, 57 TransitionsBefore, 11 TransitionsAfterwards, 592 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 54 TotalNumberOfCompositions, 576 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 568 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 11 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 32 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 68 PlacesBefore, 24 PlacesAfterwards, 63 TransitionsBefore, 16 TransitionsAfterwards, 920 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1184 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 808 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 16 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 49 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.2s, 76 PlacesBefore, 29 PlacesAfterwards, 69 TransitionsBefore, 19 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 57 TotalNumberOfCompositions, 1815 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 987 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 24 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 84 PlacesBefore, 34 PlacesAfterwards, 75 TransitionsBefore, 22 TransitionsAfterwards, 1756 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 64 TotalNumberOfCompositions, 2872 MoverChecksTotal - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1265 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 83 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 92 PlacesBefore, 39 PlacesAfterwards, 81 TransitionsBefore, 25 TransitionsAfterwards, 2264 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 3 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 3488 MoverChecksTotal - TimeoutResultAtElement [Line: 678]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 678). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 1 error locations. Started 5 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 815.8s, OverallIterations: 45, TraceHistogramMax: 5, AutomataDifference: 802.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 471 SDtfs, 3634 SDslu, 629 SDs, 0 SdLazy, 7226 SolverSat, 488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 543 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2689 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7869occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 791 NumberOfCodeBlocks, 791 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 682 ConstructedInterpolants, 0 QuantifiedInterpolants, 64860 SizeOfPredicates, 40 NumberOfNonLiveVariables, 910 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 50 InterpolantComputations, 32 PerfectInterpolantSequences, 232/262 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown