/usr/bin/java -Xmx8000000000 -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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 00:13:42,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 00:13:42,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 00:13:42,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 00:13:42,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 00:13:42,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 00:13:42,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 00:13:42,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 00:13:42,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 00:13:42,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 00:13:42,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 00:13:42,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 00:13:42,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 00:13:42,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 00:13:42,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 00:13:42,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 00:13:42,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 00:13:42,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 00:13:42,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 00:13:42,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 00:13:42,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 00:13:42,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 00:13:42,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 00:13:42,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 00:13:42,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 00:13:42,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 00:13:42,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 00:13:42,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 00:13:42,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 00:13:42,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 00:13:42,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 00:13:42,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 00:13:42,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 00:13:42,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 00:13:42,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 00:13:42,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 00:13:42,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 00:13:42,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 00:13:42,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 00:13:42,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 00:13:42,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 00:13:42,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-06 00:13:42,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 00:13:42,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 00:13:42,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 00:13:42,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 00:13:42,540 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 00:13:42,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 00:13:42,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 00:13:42,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 00:13:42,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 00:13:42,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 00:13:42,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 00:13:42,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 00:13:42,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 00:13:42,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 00:13:42,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 00:13:42,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 00:13:42,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 00:13:42,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 00:13:42,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 00:13:42,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 00:13:42,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 00:13:42,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 00:13:42,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 00:13:42,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 00:13:42,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 00:13:42,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 00:13:42,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 00:13:42,547 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 00:13:42,547 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 00:13:42,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 00:13:42,548 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 00:13:42,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 00:13:42,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 00:13:42,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 00:13:42,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 00:13:42,890 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 00:13:42,891 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-10-06 00:13:42,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/312ead1ce/499150edf6114ad59d89a709020c7415/FLAG046851259 [2020-10-06 00:13:43,480 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 00:13:43,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2020-10-06 00:13:43,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/312ead1ce/499150edf6114ad59d89a709020c7415/FLAG046851259 [2020-10-06 00:13:43,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/312ead1ce/499150edf6114ad59d89a709020c7415 [2020-10-06 00:13:43,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 00:13:43,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 00:13:43,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 00:13:43,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 00:13:43,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 00:13:43,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:13:43" (1/1) ... [2020-10-06 00:13:43,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b07469d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:43, skipping insertion in model container [2020-10-06 00:13:43,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 12:13:43" (1/1) ... [2020-10-06 00:13:43,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 00:13:43,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 00:13:44,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:13:44,326 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 00:13:44,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 00:13:44,451 INFO L208 MainTranslator]: Completed translation [2020-10-06 00:13:44,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44 WrapperNode [2020-10-06 00:13:44,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 00:13:44,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 00:13:44,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 00:13:44,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 00:13:44,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 00:13:44,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 00:13:44,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 00:13:44,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 00:13:44,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (1/1) ... [2020-10-06 00:13:44,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 00:13:44,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 00:13:44,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 00:13:44,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 00:13:44,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (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 [2020-10-06 00:13:44,591 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-06 00:13:44,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-06 00:13:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 00:13:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 00:13:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 00:13:44,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 00:13:44,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 00:13:44,594 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 00:13:44,854 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 00:13:44,854 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-06 00:13:44,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:13:44 BoogieIcfgContainer [2020-10-06 00:13:44,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 00:13:44,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 00:13:44,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 00:13:44,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 00:13:44,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 12:13:43" (1/3) ... [2020-10-06 00:13:44,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9750a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:13:44, skipping insertion in model container [2020-10-06 00:13:44,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 12:13:44" (2/3) ... [2020-10-06 00:13:44,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d9750a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 12:13:44, skipping insertion in model container [2020-10-06 00:13:44,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 12:13:44" (3/3) ... [2020-10-06 00:13:44,866 INFO L109 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2020-10-06 00:13:44,881 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 00:13:44,882 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 00:13:44,893 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 00:13:44,894 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 00:13:44,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,931 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,931 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,932 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,933 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:44,969 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-06 00:13:44,993 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:13:44,993 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:13:44,994 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:13:44,994 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:13:44,994 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:13:44,994 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:13:44,994 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:13:44,995 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:13:45,024 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 33 transitions, 71 flow [2020-10-06 00:13:45,029 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-10-06 00:13:45,083 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-10-06 00:13:45,084 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:13:45,090 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2020-10-06 00:13:45,092 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 71 flow [2020-10-06 00:13:45,105 INFO L129 PetriNetUnfolder]: 3/41 cut-off events. [2020-10-06 00:13:45,105 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 00:13:45,106 INFO L80 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2020-10-06 00:13:45,108 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 240 [2020-10-06 00:13:45,109 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:13:45,695 INFO L206 etLargeBlockEncoding]: Checked pairs total: 167 [2020-10-06 00:13:45,695 INFO L214 etLargeBlockEncoding]: Total number of compositions: 30 [2020-10-06 00:13:45,699 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-10-06 00:13:45,708 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-06 00:13:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-06 00:13:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-06 00:13:45,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:45,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-06 00:13:45,718 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:45,724 INFO L82 PathProgramCache]: Analyzing trace with hash 4687883, now seen corresponding path program 1 times [2020-10-06 00:13:45,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:45,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672442137] [2020-10-06 00:13:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:45,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672442137] [2020-10-06 00:13:45,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:45,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 00:13:45,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1074779247] [2020-10-06 00:13:45,899 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:45,902 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:45,914 INFO L258 McrAutomatonBuilder]: Finished intersection with 5 states and 4 transitions. [2020-10-06 00:13:45,915 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:45,919 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:45,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-06 00:13:45,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:45,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-06 00:13:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 00:13:45,938 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-06 00:13:45,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:45,942 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-06 00:13:45,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-06 00:13:45,943 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-06 00:13:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:45,952 INFO L225 Difference]: With dead ends: 11 [2020-10-06 00:13:45,952 INFO L226 Difference]: Without dead ends: 11 [2020-10-06 00:13:45,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-06 00:13:45,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-06 00:13:45,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-06 00:13:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-06 00:13:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-06 00:13:45,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-10-06 00:13:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:45,988 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-06 00:13:45,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-06 00:13:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-06 00:13:45,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-06 00:13:45,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:45,989 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-06 00:13:45,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 00:13:45,990 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash 210024220, now seen corresponding path program 1 times [2020-10-06 00:13:45,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:45,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315983189] [2020-10-06 00:13:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:46,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:46,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:46,057 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:13:46,057 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:13:46,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 00:13:46,060 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:13:46,060 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-06 00:13:46,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,067 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,067 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,068 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,068 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,069 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,070 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,071 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,071 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,072 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,072 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,073 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,074 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,074 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,075 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:46,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 00:13:46,084 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:13:46,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:13:46,085 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:13:46,085 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:13:46,085 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:13:46,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:13:46,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:13:46,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:13:46,087 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 104 flow [2020-10-06 00:13:46,088 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-10-06 00:13:46,103 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-10-06 00:13:46,103 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-06 00:13:46,104 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 5/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-10-06 00:13:46,106 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 104 flow [2020-10-06 00:13:46,119 INFO L129 PetriNetUnfolder]: 5/63 cut-off events. [2020-10-06 00:13:46,120 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-06 00:13:46,121 INFO L80 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 63 events. 5/63 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 125 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 42. Up to 6 conditions per place. [2020-10-06 00:13:46,122 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 792 [2020-10-06 00:13:46,122 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:13:46,629 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1029 [2020-10-06 00:13:46,629 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2020-10-06 00:13:46,630 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 13 transitions, 38 flow [2020-10-06 00:13:46,636 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 100 states. [2020-10-06 00:13:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-10-06 00:13:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:13:46,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:46,638 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:13:46,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:46,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:46,639 INFO L82 PathProgramCache]: Analyzing trace with hash 240626158, now seen corresponding path program 1 times [2020-10-06 00:13:46,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:46,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898427905] [2020-10-06 00:13:46,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:46,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898427905] [2020-10-06 00:13:46,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:46,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:46,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1060604596] [2020-10-06 00:13:46,708 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:46,708 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:46,710 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:13:46,710 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:46,710 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:46,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:46,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:46,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:46,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:46,713 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 3 states. [2020-10-06 00:13:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:46,777 INFO L93 Difference]: Finished difference Result 96 states and 197 transitions. [2020-10-06 00:13:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:46,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:13:46,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:46,782 INFO L225 Difference]: With dead ends: 96 [2020-10-06 00:13:46,782 INFO L226 Difference]: Without dead ends: 96 [2020-10-06 00:13:46,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:46,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-06 00:13:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2020-10-06 00:13:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-06 00:13:46,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 180 transitions. [2020-10-06 00:13:46,802 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 180 transitions. Word has length 5 [2020-10-06 00:13:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:46,802 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 180 transitions. [2020-10-06 00:13:46,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:46,803 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 180 transitions. [2020-10-06 00:13:46,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:13:46,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:46,804 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:46,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 00:13:46,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:46,805 INFO L82 PathProgramCache]: Analyzing trace with hash 109807895, now seen corresponding path program 1 times [2020-10-06 00:13:46,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:46,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697525290] [2020-10-06 00:13:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:13:46,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697525290] [2020-10-06 00:13:46,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:46,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:46,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1756874298] [2020-10-06 00:13:46,839 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:46,839 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:46,841 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:13:46,841 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:46,842 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:46,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:46,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:46,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:46,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:46,843 INFO L87 Difference]: Start difference. First operand 84 states and 180 transitions. Second operand 3 states. [2020-10-06 00:13:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:46,861 INFO L93 Difference]: Finished difference Result 84 states and 164 transitions. [2020-10-06 00:13:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:46,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:13:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:46,864 INFO L225 Difference]: With dead ends: 84 [2020-10-06 00:13:46,864 INFO L226 Difference]: Without dead ends: 84 [2020-10-06 00:13:46,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:46,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-06 00:13:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-10-06 00:13:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-06 00:13:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 154 transitions. [2020-10-06 00:13:46,876 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 154 transitions. Word has length 8 [2020-10-06 00:13:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:46,876 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 154 transitions. [2020-10-06 00:13:46,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 154 transitions. [2020-10-06 00:13:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:46,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:46,877 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:46,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 00:13:46,878 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:46,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:46,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1655579211, now seen corresponding path program 1 times [2020-10-06 00:13:46,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:46,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833280205] [2020-10-06 00:13:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:46,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833280205] [2020-10-06 00:13:46,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:46,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:46,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1297954058] [2020-10-06 00:13:46,939 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:46,940 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:46,942 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:13:46,942 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:46,958 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:46,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:46,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:46,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:46,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:46,959 INFO L87 Difference]: Start difference. First operand 76 states and 154 transitions. Second operand 4 states. [2020-10-06 00:13:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:46,986 INFO L93 Difference]: Finished difference Result 68 states and 136 transitions. [2020-10-06 00:13:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:46,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:13:46,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:46,987 INFO L225 Difference]: With dead ends: 68 [2020-10-06 00:13:46,988 INFO L226 Difference]: Without dead ends: 68 [2020-10-06 00:13:46,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-06 00:13:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-06 00:13:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-06 00:13:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 129 transitions. [2020-10-06 00:13:46,996 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 129 transitions. Word has length 9 [2020-10-06 00:13:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:46,997 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 129 transitions. [2020-10-06 00:13:46,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 129 transitions. [2020-10-06 00:13:46,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:46,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:46,998 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-06 00:13:46,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 00:13:46,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:46,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:46,999 INFO L82 PathProgramCache]: Analyzing trace with hash -891005170, now seen corresponding path program 1 times [2020-10-06 00:13:47,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:47,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186619405] [2020-10-06 00:13:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:47,014 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:47,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:47,028 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:13:47,029 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:13:47,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-06 00:13:47,029 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:13:47,031 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-06 00:13:47,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,037 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,038 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,038 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,039 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,039 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,050 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,050 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,050 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,054 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,054 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:47,056 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-06 00:13:47,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:13:47,056 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:13:47,056 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:13:47,056 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:13:47,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:13:47,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:13:47,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:13:47,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:13:47,059 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 59 transitions, 139 flow [2020-10-06 00:13:47,059 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-10-06 00:13:47,075 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-10-06 00:13:47,075 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-06 00:13:47,076 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-06 00:13:47,079 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 59 transitions, 139 flow [2020-10-06 00:13:47,096 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2020-10-06 00:13:47,097 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-06 00:13:47,098 INFO L80 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 7/85 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 67. Up to 8 conditions per place. [2020-10-06 00:13:47,100 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1656 [2020-10-06 00:13:47,100 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:13:47,646 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2190 [2020-10-06 00:13:47,647 INFO L214 etLargeBlockEncoding]: Total number of compositions: 48 [2020-10-06 00:13:47,647 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 17 transitions, 55 flow [2020-10-06 00:13:47,673 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 404 states. [2020-10-06 00:13:47,678 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states. [2020-10-06 00:13:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:13:47,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:47,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:13:47,679 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:47,679 INFO L82 PathProgramCache]: Analyzing trace with hash 359632331, now seen corresponding path program 1 times [2020-10-06 00:13:47,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:47,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613855144] [2020-10-06 00:13:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:47,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613855144] [2020-10-06 00:13:47,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:47,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:47,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [968983561] [2020-10-06 00:13:47,708 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:47,708 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:47,709 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:13:47,709 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:47,709 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:47,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:47,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:47,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:47,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:47,710 INFO L87 Difference]: Start difference. First operand 404 states. Second operand 3 states. [2020-10-06 00:13:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:47,742 INFO L93 Difference]: Finished difference Result 447 states and 1247 transitions. [2020-10-06 00:13:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:47,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:13:47,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:47,749 INFO L225 Difference]: With dead ends: 447 [2020-10-06 00:13:47,749 INFO L226 Difference]: Without dead ends: 447 [2020-10-06 00:13:47,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-06 00:13:47,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 378. [2020-10-06 00:13:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-10-06 00:13:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1099 transitions. [2020-10-06 00:13:47,802 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1099 transitions. Word has length 5 [2020-10-06 00:13:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:47,802 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 1099 transitions. [2020-10-06 00:13:47,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1099 transitions. [2020-10-06 00:13:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:13:47,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:47,803 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:47,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-06 00:13:47,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2061810264, now seen corresponding path program 1 times [2020-10-06 00:13:47,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:47,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452620054] [2020-10-06 00:13:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:13:47,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452620054] [2020-10-06 00:13:47,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:47,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:47,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1429094948] [2020-10-06 00:13:47,850 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:47,851 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:47,853 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:13:47,853 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:47,853 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:47,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:47,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:47,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:47,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:47,854 INFO L87 Difference]: Start difference. First operand 378 states and 1099 transitions. Second operand 3 states. [2020-10-06 00:13:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:47,884 INFO L93 Difference]: Finished difference Result 486 states and 1356 transitions. [2020-10-06 00:13:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:47,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:13:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:47,889 INFO L225 Difference]: With dead ends: 486 [2020-10-06 00:13:47,889 INFO L226 Difference]: Without dead ends: 486 [2020-10-06 00:13:47,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:47,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-10-06 00:13:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 412. [2020-10-06 00:13:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-06 00:13:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 1196 transitions. [2020-10-06 00:13:47,917 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 1196 transitions. Word has length 8 [2020-10-06 00:13:47,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:47,918 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 1196 transitions. [2020-10-06 00:13:47,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:47,918 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 1196 transitions. [2020-10-06 00:13:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:47,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:47,919 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:47,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-06 00:13:47,919 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1871610837, now seen corresponding path program 1 times [2020-10-06 00:13:47,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:47,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986477667] [2020-10-06 00:13:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:47,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986477667] [2020-10-06 00:13:47,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:47,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:47,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1925642078] [2020-10-06 00:13:47,957 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:47,958 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:47,959 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:13:47,959 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:47,965 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:47,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:47,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:47,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:47,966 INFO L87 Difference]: Start difference. First operand 412 states and 1196 transitions. Second operand 4 states. [2020-10-06 00:13:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:47,994 INFO L93 Difference]: Finished difference Result 338 states and 962 transitions. [2020-10-06 00:13:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:47,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:13:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:47,998 INFO L225 Difference]: With dead ends: 338 [2020-10-06 00:13:47,998 INFO L226 Difference]: Without dead ends: 338 [2020-10-06 00:13:47,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-06 00:13:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 283. [2020-10-06 00:13:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-10-06 00:13:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 793 transitions. [2020-10-06 00:13:48,011 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 793 transitions. Word has length 9 [2020-10-06 00:13:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:48,011 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 793 transitions. [2020-10-06 00:13:48,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 793 transitions. [2020-10-06 00:13:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:48,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:48,012 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:48,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-06 00:13:48,012 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:48,013 INFO L82 PathProgramCache]: Analyzing trace with hash -508390409, now seen corresponding path program 1 times [2020-10-06 00:13:48,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:48,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810850670] [2020-10-06 00:13:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:13:48,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810850670] [2020-10-06 00:13:48,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:48,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:48,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [127308167] [2020-10-06 00:13:48,054 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:48,055 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:48,056 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:13:48,056 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:48,057 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:48,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:48,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:48,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:48,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:48,058 INFO L87 Difference]: Start difference. First operand 283 states and 793 transitions. Second operand 4 states. [2020-10-06 00:13:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:48,083 INFO L93 Difference]: Finished difference Result 233 states and 641 transitions. [2020-10-06 00:13:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:48,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:13:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:48,086 INFO L225 Difference]: With dead ends: 233 [2020-10-06 00:13:48,086 INFO L226 Difference]: Without dead ends: 233 [2020-10-06 00:13:48,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-06 00:13:48,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 183. [2020-10-06 00:13:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-06 00:13:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 489 transitions. [2020-10-06 00:13:48,095 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 489 transitions. Word has length 9 [2020-10-06 00:13:48,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:48,095 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 489 transitions. [2020-10-06 00:13:48,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 489 transitions. [2020-10-06 00:13:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:13:48,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:48,097 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:48,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-06 00:13:48,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:48,098 INFO L82 PathProgramCache]: Analyzing trace with hash 960774069, now seen corresponding path program 1 times [2020-10-06 00:13:48,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:48,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057588401] [2020-10-06 00:13:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:13:48,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057588401] [2020-10-06 00:13:48,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:48,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:48,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [33948296] [2020-10-06 00:13:48,120 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:48,122 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:48,123 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-06 00:13:48,123 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:48,123 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:48,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:48,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:48,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:48,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:48,124 INFO L87 Difference]: Start difference. First operand 183 states and 489 transitions. Second operand 3 states. [2020-10-06 00:13:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:48,145 INFO L93 Difference]: Finished difference Result 243 states and 634 transitions. [2020-10-06 00:13:48,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:48,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:13:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:48,147 INFO L225 Difference]: With dead ends: 243 [2020-10-06 00:13:48,147 INFO L226 Difference]: Without dead ends: 243 [2020-10-06 00:13:48,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-06 00:13:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 211. [2020-10-06 00:13:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-06 00:13:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 570 transitions. [2020-10-06 00:13:48,156 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 570 transitions. Word has length 11 [2020-10-06 00:13:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:48,157 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 570 transitions. [2020-10-06 00:13:48,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 570 transitions. [2020-10-06 00:13:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:13:48,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:48,158 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:48,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-06 00:13:48,159 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:48,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash -280773966, now seen corresponding path program 1 times [2020-10-06 00:13:48,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:48,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800019668] [2020-10-06 00:13:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:13:48,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800019668] [2020-10-06 00:13:48,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:48,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:48,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1891529010] [2020-10-06 00:13:48,224 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:48,225 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:48,226 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-06 00:13:48,226 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:48,227 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:48,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:48,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:48,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:48,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:48,228 INFO L87 Difference]: Start difference. First operand 211 states and 570 transitions. Second operand 4 states. [2020-10-06 00:13:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:48,250 INFO L93 Difference]: Finished difference Result 179 states and 474 transitions. [2020-10-06 00:13:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:48,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 00:13:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:48,252 INFO L225 Difference]: With dead ends: 179 [2020-10-06 00:13:48,252 INFO L226 Difference]: Without dead ends: 179 [2020-10-06 00:13:48,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-06 00:13:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 147. [2020-10-06 00:13:48,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-06 00:13:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 378 transitions. [2020-10-06 00:13:48,258 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 378 transitions. Word has length 12 [2020-10-06 00:13:48,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:48,258 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 378 transitions. [2020-10-06 00:13:48,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 378 transitions. [2020-10-06 00:13:48,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:13:48,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:48,260 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-06 00:13:48,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-06 00:13:48,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:48,260 INFO L82 PathProgramCache]: Analyzing trace with hash -280874677, now seen corresponding path program 1 times [2020-10-06 00:13:48,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:48,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147946909] [2020-10-06 00:13:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:48,270 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:48,277 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:48,281 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:13:48,282 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:13:48,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-06 00:13:48,283 WARN L363 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:13:48,283 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-06 00:13:48,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,290 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,290 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,291 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,291 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,294 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,297 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,297 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,298 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,298 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,299 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,299 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,304 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,305 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,305 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,305 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,305 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,305 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,307 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,307 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,307 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,307 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:48,309 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-06 00:13:48,309 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:13:48,309 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:13:48,309 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:13:48,309 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:13:48,310 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:13:48,310 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:13:48,310 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:13:48,310 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:13:48,312 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 72 transitions, 176 flow [2020-10-06 00:13:48,312 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-10-06 00:13:48,326 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-10-06 00:13:48,327 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-06 00:13:48,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 107 events. 9/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 93. Up to 10 conditions per place. [2020-10-06 00:13:48,331 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 76 places, 72 transitions, 176 flow [2020-10-06 00:13:48,345 INFO L129 PetriNetUnfolder]: 9/107 cut-off events. [2020-10-06 00:13:48,345 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-06 00:13:48,346 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 107 events. 9/107 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 93. Up to 10 conditions per place. [2020-10-06 00:13:48,350 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2832 [2020-10-06 00:13:48,350 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:13:49,049 INFO L206 etLargeBlockEncoding]: Checked pairs total: 4331 [2020-10-06 00:13:49,049 INFO L214 etLargeBlockEncoding]: Total number of compositions: 63 [2020-10-06 00:13:49,051 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 23 transitions, 78 flow [2020-10-06 00:13:49,125 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1620 states. [2020-10-06 00:13:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states. [2020-10-06 00:13:49,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:13:49,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:49,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:13:49,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:49,127 INFO L82 PathProgramCache]: Analyzing trace with hash 500888133, now seen corresponding path program 1 times [2020-10-06 00:13:49,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:49,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669699735] [2020-10-06 00:13:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:49,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669699735] [2020-10-06 00:13:49,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:49,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:49,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1133208059] [2020-10-06 00:13:49,146 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:49,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:49,147 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:13:49,147 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:49,147 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:49,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:49,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:49,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:49,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:49,148 INFO L87 Difference]: Start difference. First operand 1620 states. Second operand 3 states. [2020-10-06 00:13:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:49,206 INFO L93 Difference]: Finished difference Result 1878 states and 6626 transitions. [2020-10-06 00:13:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:49,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:13:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:49,222 INFO L225 Difference]: With dead ends: 1878 [2020-10-06 00:13:49,222 INFO L226 Difference]: Without dead ends: 1878 [2020-10-06 00:13:49,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2020-10-06 00:13:49,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1572. [2020-10-06 00:13:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1572 states. [2020-10-06 00:13:49,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 5747 transitions. [2020-10-06 00:13:49,334 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 5747 transitions. Word has length 5 [2020-10-06 00:13:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:49,334 INFO L479 AbstractCegarLoop]: Abstraction has 1572 states and 5747 transitions. [2020-10-06 00:13:49,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 5747 transitions. [2020-10-06 00:13:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:13:49,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:49,335 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:49,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-06 00:13:49,336 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:49,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1111452433, now seen corresponding path program 1 times [2020-10-06 00:13:49,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:49,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65404421] [2020-10-06 00:13:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:13:49,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65404421] [2020-10-06 00:13:49,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:49,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:49,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [704245549] [2020-10-06 00:13:49,353 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:49,353 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:49,354 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:13:49,354 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:49,354 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:49,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:49,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:49,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:49,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:49,355 INFO L87 Difference]: Start difference. First operand 1572 states and 5747 transitions. Second operand 3 states. [2020-10-06 00:13:49,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:49,404 INFO L93 Difference]: Finished difference Result 2193 states and 7798 transitions. [2020-10-06 00:13:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:49,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:13:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:49,424 INFO L225 Difference]: With dead ends: 2193 [2020-10-06 00:13:49,424 INFO L226 Difference]: Without dead ends: 2193 [2020-10-06 00:13:49,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2020-10-06 00:13:49,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1828. [2020-10-06 00:13:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-10-06 00:13:49,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 6732 transitions. [2020-10-06 00:13:49,522 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 6732 transitions. Word has length 8 [2020-10-06 00:13:49,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:49,522 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 6732 transitions. [2020-10-06 00:13:49,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 6732 transitions. [2020-10-06 00:13:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:49,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:49,523 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:49,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-06 00:13:49,523 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash -231363678, now seen corresponding path program 1 times [2020-10-06 00:13:49,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:49,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504903708] [2020-10-06 00:13:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:49,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504903708] [2020-10-06 00:13:49,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:49,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:49,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [238667496] [2020-10-06 00:13:49,548 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:49,549 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:49,550 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:13:49,550 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:49,555 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:49,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:49,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:49,556 INFO L87 Difference]: Start difference. First operand 1828 states and 6732 transitions. Second operand 4 states. [2020-10-06 00:13:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:49,608 INFO L93 Difference]: Finished difference Result 1463 states and 5301 transitions. [2020-10-06 00:13:49,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:49,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:13:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:49,623 INFO L225 Difference]: With dead ends: 1463 [2020-10-06 00:13:49,624 INFO L226 Difference]: Without dead ends: 1463 [2020-10-06 00:13:49,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-06 00:13:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1177. [2020-10-06 00:13:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-10-06 00:13:49,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 4196 transitions. [2020-10-06 00:13:49,687 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 4196 transitions. Word has length 9 [2020-10-06 00:13:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:49,687 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 4196 transitions. [2020-10-06 00:13:49,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 4196 transitions. [2020-10-06 00:13:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:49,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:49,688 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:49,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-06 00:13:49,688 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:49,689 INFO L82 PathProgramCache]: Analyzing trace with hash 95288963, now seen corresponding path program 1 times [2020-10-06 00:13:49,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:49,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344545860] [2020-10-06 00:13:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:13:49,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344545860] [2020-10-06 00:13:49,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:49,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:49,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [317921554] [2020-10-06 00:13:49,712 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:49,713 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:49,714 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:13:49,714 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:49,715 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:49,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:49,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:49,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:49,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:49,716 INFO L87 Difference]: Start difference. First operand 1177 states and 4196 transitions. Second operand 4 states. [2020-10-06 00:13:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:49,756 INFO L93 Difference]: Finished difference Result 950 states and 3337 transitions. [2020-10-06 00:13:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:49,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:13:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:49,764 INFO L225 Difference]: With dead ends: 950 [2020-10-06 00:13:49,765 INFO L226 Difference]: Without dead ends: 950 [2020-10-06 00:13:49,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2020-10-06 00:13:49,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 723. [2020-10-06 00:13:49,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-10-06 00:13:49,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2478 transitions. [2020-10-06 00:13:49,801 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2478 transitions. Word has length 9 [2020-10-06 00:13:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:49,801 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 2478 transitions. [2020-10-06 00:13:49,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2478 transitions. [2020-10-06 00:13:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:13:49,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:49,802 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:49,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-06 00:13:49,802 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:49,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1255400151, now seen corresponding path program 1 times [2020-10-06 00:13:49,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:49,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038335718] [2020-10-06 00:13:49,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:13:49,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038335718] [2020-10-06 00:13:49,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:49,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:49,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1115532811] [2020-10-06 00:13:49,821 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:49,822 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:49,823 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-06 00:13:49,823 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:49,824 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:49,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:49,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:49,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:49,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:49,825 INFO L87 Difference]: Start difference. First operand 723 states and 2478 transitions. Second operand 3 states. [2020-10-06 00:13:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:49,858 INFO L93 Difference]: Finished difference Result 1044 states and 3505 transitions. [2020-10-06 00:13:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:49,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:13:49,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:49,891 INFO L225 Difference]: With dead ends: 1044 [2020-10-06 00:13:49,892 INFO L226 Difference]: Without dead ends: 1044 [2020-10-06 00:13:49,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-10-06 00:13:49,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 880. [2020-10-06 00:13:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-10-06 00:13:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 3058 transitions. [2020-10-06 00:13:49,929 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 3058 transitions. Word has length 11 [2020-10-06 00:13:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:49,929 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 3058 transitions. [2020-10-06 00:13:49,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 3058 transitions. [2020-10-06 00:13:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:13:49,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:49,930 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:49,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-06 00:13:49,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash 262700715, now seen corresponding path program 1 times [2020-10-06 00:13:49,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:49,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668555273] [2020-10-06 00:13:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:13:49,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668555273] [2020-10-06 00:13:49,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:49,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:49,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [104925918] [2020-10-06 00:13:49,956 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:49,957 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:49,958 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-06 00:13:49,959 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:49,959 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:49,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:49,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:49,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:49,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:49,960 INFO L87 Difference]: Start difference. First operand 880 states and 3058 transitions. Second operand 4 states. [2020-10-06 00:13:49,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:49,992 INFO L93 Difference]: Finished difference Result 716 states and 2447 transitions. [2020-10-06 00:13:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:49,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 00:13:49,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:49,998 INFO L225 Difference]: With dead ends: 716 [2020-10-06 00:13:49,999 INFO L226 Difference]: Without dead ends: 716 [2020-10-06 00:13:49,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:50,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-06 00:13:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 552. [2020-10-06 00:13:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-06 00:13:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1836 transitions. [2020-10-06 00:13:50,021 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1836 transitions. Word has length 12 [2020-10-06 00:13:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:50,021 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 1836 transitions. [2020-10-06 00:13:50,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1836 transitions. [2020-10-06 00:13:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:13:50,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:50,023 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:50,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-06 00:13:50,023 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:50,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1066051238, now seen corresponding path program 1 times [2020-10-06 00:13:50,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:50,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487553919] [2020-10-06 00:13:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:50,040 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-06 00:13:50,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487553919] [2020-10-06 00:13:50,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:50,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:50,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [437647005] [2020-10-06 00:13:50,041 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:50,042 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:50,043 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-06 00:13:50,044 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:50,044 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:50,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:50,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:50,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:50,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:50,045 INFO L87 Difference]: Start difference. First operand 552 states and 1836 transitions. Second operand 3 states. [2020-10-06 00:13:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:50,071 INFO L93 Difference]: Finished difference Result 756 states and 2485 transitions. [2020-10-06 00:13:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:50,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-06 00:13:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:50,078 INFO L225 Difference]: With dead ends: 756 [2020-10-06 00:13:50,078 INFO L226 Difference]: Without dead ends: 756 [2020-10-06 00:13:50,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-10-06 00:13:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 652. [2020-10-06 00:13:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-10-06 00:13:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2203 transitions. [2020-10-06 00:13:50,103 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2203 transitions. Word has length 14 [2020-10-06 00:13:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:50,103 INFO L479 AbstractCegarLoop]: Abstraction has 652 states and 2203 transitions. [2020-10-06 00:13:50,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2203 transitions. [2020-10-06 00:13:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:13:50,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:50,105 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:50,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-06 00:13:50,105 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-06 00:13:50,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:50,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1312017708, now seen corresponding path program 1 times [2020-10-06 00:13:50,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:50,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598655621] [2020-10-06 00:13:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:50,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:50,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:50,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:13:50,128 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:13:50,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-06 00:13:50,129 WARN L363 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:13:50,129 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-06 00:13:50,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,137 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,138 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,138 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,139 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,139 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,141 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,141 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,142 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,142 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,143 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,143 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,144 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,144 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,145 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,145 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,146 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,146 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,147 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,147 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,148 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,148 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,149 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,149 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,150 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,150 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,153 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,153 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,154 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,154 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,155 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,155 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,156 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,157 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,158 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,158 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,159 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,160 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,160 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:50,161 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-06 00:13:50,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:13:50,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:13:50,162 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:13:50,162 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:13:50,162 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:13:50,162 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:13:50,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:13:50,163 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:13:50,164 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 85 transitions, 215 flow [2020-10-06 00:13:50,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-10-06 00:13:50,181 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-10-06 00:13:50,181 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-06 00:13:50,183 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 129 events. 11/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2020-10-06 00:13:50,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 90 places, 85 transitions, 215 flow [2020-10-06 00:13:50,201 INFO L129 PetriNetUnfolder]: 11/129 cut-off events. [2020-10-06 00:13:50,202 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-06 00:13:50,203 INFO L80 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 129 events. 11/129 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 368 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 12 conditions per place. [2020-10-06 00:13:50,208 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 4320 [2020-10-06 00:13:50,208 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:13:51,019 INFO L206 etLargeBlockEncoding]: Checked pairs total: 6550 [2020-10-06 00:13:51,019 INFO L214 etLargeBlockEncoding]: Total number of compositions: 76 [2020-10-06 00:13:51,020 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 28 transitions, 101 flow [2020-10-06 00:13:51,535 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 6484 states. [2020-10-06 00:13:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 6484 states. [2020-10-06 00:13:51,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:13:51,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:51,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:13:51,536 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:51,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:51,536 INFO L82 PathProgramCache]: Analyzing trace with hash 666270871, now seen corresponding path program 1 times [2020-10-06 00:13:51,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:51,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007995379] [2020-10-06 00:13:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:51,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007995379] [2020-10-06 00:13:51,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:51,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:51,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1116921905] [2020-10-06 00:13:51,558 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:51,558 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:51,559 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:13:51,559 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:51,559 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:51,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:51,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:51,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:51,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:51,560 INFO L87 Difference]: Start difference. First operand 6484 states. Second operand 3 states. [2020-10-06 00:13:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:51,738 INFO L93 Difference]: Finished difference Result 7629 states and 32588 transitions. [2020-10-06 00:13:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:51,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:13:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:51,813 INFO L225 Difference]: With dead ends: 7629 [2020-10-06 00:13:51,813 INFO L226 Difference]: Without dead ends: 7629 [2020-10-06 00:13:51,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2020-10-06 00:13:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 6366. [2020-10-06 00:13:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6366 states. [2020-10-06 00:13:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 28029 transitions. [2020-10-06 00:13:52,310 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 28029 transitions. Word has length 5 [2020-10-06 00:13:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:52,310 INFO L479 AbstractCegarLoop]: Abstraction has 6366 states and 28029 transitions. [2020-10-06 00:13:52,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 28029 transitions. [2020-10-06 00:13:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:13:52,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:52,311 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:52,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-06 00:13:52,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:52,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:52,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1690072825, now seen corresponding path program 1 times [2020-10-06 00:13:52,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:52,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366481276] [2020-10-06 00:13:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:52,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:13:52,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366481276] [2020-10-06 00:13:52,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:52,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:52,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1050439991] [2020-10-06 00:13:52,328 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:52,328 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:52,329 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:13:52,329 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:52,329 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:52,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:52,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:52,330 INFO L87 Difference]: Start difference. First operand 6366 states and 28029 transitions. Second operand 3 states. [2020-10-06 00:13:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:52,430 INFO L93 Difference]: Finished difference Result 9120 states and 39254 transitions. [2020-10-06 00:13:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:52,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:13:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:52,479 INFO L225 Difference]: With dead ends: 9120 [2020-10-06 00:13:52,479 INFO L226 Difference]: Without dead ends: 9120 [2020-10-06 00:13:52,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-10-06 00:13:52,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 7564. [2020-10-06 00:13:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7564 states. [2020-10-06 00:13:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7564 states to 7564 states and 33556 transitions. [2020-10-06 00:13:53,014 INFO L78 Accepts]: Start accepts. Automaton has 7564 states and 33556 transitions. Word has length 8 [2020-10-06 00:13:53,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:53,015 INFO L479 AbstractCegarLoop]: Abstraction has 7564 states and 33556 transitions. [2020-10-06 00:13:53,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 7564 states and 33556 transitions. [2020-10-06 00:13:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:53,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:53,015 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:53,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-06 00:13:53,016 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:53,016 INFO L82 PathProgramCache]: Analyzing trace with hash 868276956, now seen corresponding path program 1 times [2020-10-06 00:13:53,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:53,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834643585] [2020-10-06 00:13:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:13:53,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834643585] [2020-10-06 00:13:53,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:53,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:53,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [73455844] [2020-10-06 00:13:53,039 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:53,040 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:53,041 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:13:53,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:53,045 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:53,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:53,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:53,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:53,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:53,047 INFO L87 Difference]: Start difference. First operand 7564 states and 33556 transitions. Second operand 4 states. [2020-10-06 00:13:53,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:53,127 INFO L93 Difference]: Finished difference Result 6008 states and 26302 transitions. [2020-10-06 00:13:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:53,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:13:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:53,157 INFO L225 Difference]: With dead ends: 6008 [2020-10-06 00:13:53,157 INFO L226 Difference]: Without dead ends: 6008 [2020-10-06 00:13:53,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:53,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6008 states. [2020-10-06 00:13:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6008 to 4771. [2020-10-06 00:13:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4771 states. [2020-10-06 00:13:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 20598 transitions. [2020-10-06 00:13:53,457 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 20598 transitions. Word has length 9 [2020-10-06 00:13:53,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:53,458 INFO L479 AbstractCegarLoop]: Abstraction has 4771 states and 20598 transitions. [2020-10-06 00:13:53,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 20598 transitions. [2020-10-06 00:13:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:13:53,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:53,459 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:53,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-06 00:13:53,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:53,460 INFO L82 PathProgramCache]: Analyzing trace with hash 852652394, now seen corresponding path program 1 times [2020-10-06 00:13:53,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:53,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819510823] [2020-10-06 00:13:53,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:13:53,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819510823] [2020-10-06 00:13:53,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:53,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:53,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [447136584] [2020-10-06 00:13:53,486 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:53,487 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:53,489 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:13:53,489 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:53,490 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:53,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:53,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:53,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:53,491 INFO L87 Difference]: Start difference. First operand 4771 states and 20598 transitions. Second operand 4 states. [2020-10-06 00:13:54,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:54,008 INFO L93 Difference]: Finished difference Result 3827 states and 16326 transitions. [2020-10-06 00:13:54,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:54,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:13:54,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:54,027 INFO L225 Difference]: With dead ends: 3827 [2020-10-06 00:13:54,027 INFO L226 Difference]: Without dead ends: 3827 [2020-10-06 00:13:54,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2020-10-06 00:13:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 2883. [2020-10-06 00:13:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2883 states. [2020-10-06 00:13:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 12054 transitions. [2020-10-06 00:13:54,168 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 12054 transitions. Word has length 9 [2020-10-06 00:13:54,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:54,168 INFO L479 AbstractCegarLoop]: Abstraction has 2883 states and 12054 transitions. [2020-10-06 00:13:54,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 12054 transitions. [2020-10-06 00:13:54,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:13:54,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:54,169 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:54,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-06 00:13:54,169 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:54,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:54,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1095418705, now seen corresponding path program 1 times [2020-10-06 00:13:54,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:54,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002871020] [2020-10-06 00:13:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:13:54,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002871020] [2020-10-06 00:13:54,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:54,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:54,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1984708271] [2020-10-06 00:13:54,189 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:54,190 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:54,191 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-06 00:13:54,191 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:54,191 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:54,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:54,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:54,192 INFO L87 Difference]: Start difference. First operand 2883 states and 12054 transitions. Second operand 3 states. [2020-10-06 00:13:54,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:54,245 INFO L93 Difference]: Finished difference Result 4275 states and 17545 transitions. [2020-10-06 00:13:54,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:54,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:13:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:54,264 INFO L225 Difference]: With dead ends: 4275 [2020-10-06 00:13:54,265 INFO L226 Difference]: Without dead ends: 4275 [2020-10-06 00:13:54,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2020-10-06 00:13:54,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 3574. [2020-10-06 00:13:54,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2020-10-06 00:13:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 15125 transitions. [2020-10-06 00:13:54,427 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 15125 transitions. Word has length 11 [2020-10-06 00:13:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:54,428 INFO L479 AbstractCegarLoop]: Abstraction has 3574 states and 15125 transitions. [2020-10-06 00:13:54,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:54,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 15125 transitions. [2020-10-06 00:13:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:13:54,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:54,429 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:54,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-06 00:13:54,429 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:54,429 INFO L82 PathProgramCache]: Analyzing trace with hash 401760447, now seen corresponding path program 1 times [2020-10-06 00:13:54,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:54,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840639613] [2020-10-06 00:13:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:13:54,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840639613] [2020-10-06 00:13:54,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:54,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:54,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [449462406] [2020-10-06 00:13:54,465 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:54,465 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:54,467 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-10-06 00:13:54,467 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:54,467 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:54,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:54,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:54,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:54,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:54,468 INFO L87 Difference]: Start difference. First operand 3574 states and 15125 transitions. Second operand 4 states. [2020-10-06 00:13:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:54,520 INFO L93 Difference]: Finished difference Result 2873 states and 12004 transitions. [2020-10-06 00:13:54,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:54,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 00:13:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:54,533 INFO L225 Difference]: With dead ends: 2873 [2020-10-06 00:13:54,533 INFO L226 Difference]: Without dead ends: 2873 [2020-10-06 00:13:54,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-06 00:13:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2172. [2020-10-06 00:13:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2172 states. [2020-10-06 00:13:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 8883 transitions. [2020-10-06 00:13:54,707 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 8883 transitions. Word has length 12 [2020-10-06 00:13:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:54,707 INFO L479 AbstractCegarLoop]: Abstraction has 2172 states and 8883 transitions. [2020-10-06 00:13:54,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 8883 transitions. [2020-10-06 00:13:54,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:13:54,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:54,709 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:54,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-06 00:13:54,710 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:54,710 INFO L82 PathProgramCache]: Analyzing trace with hash -596519610, now seen corresponding path program 1 times [2020-10-06 00:13:54,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:54,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196380034] [2020-10-06 00:13:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-06 00:13:54,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196380034] [2020-10-06 00:13:54,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:54,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:54,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1527268754] [2020-10-06 00:13:54,743 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:54,744 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:54,745 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-06 00:13:54,746 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:54,746 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:54,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:54,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:54,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:54,747 INFO L87 Difference]: Start difference. First operand 2172 states and 8883 transitions. Second operand 3 states. [2020-10-06 00:13:54,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:54,801 INFO L93 Difference]: Finished difference Result 3177 states and 12799 transitions. [2020-10-06 00:13:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:54,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-06 00:13:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:54,826 INFO L225 Difference]: With dead ends: 3177 [2020-10-06 00:13:54,826 INFO L226 Difference]: Without dead ends: 3177 [2020-10-06 00:13:54,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2020-10-06 00:13:54,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 2671. [2020-10-06 00:13:54,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2671 states. [2020-10-06 00:13:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 11075 transitions. [2020-10-06 00:13:54,933 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 11075 transitions. Word has length 14 [2020-10-06 00:13:54,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:54,934 INFO L479 AbstractCegarLoop]: Abstraction has 2671 states and 11075 transitions. [2020-10-06 00:13:54,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 11075 transitions. [2020-10-06 00:13:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:13:54,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:54,935 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:54,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-06 00:13:54,936 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:54,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1312236012, now seen corresponding path program 1 times [2020-10-06 00:13:54,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:54,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358803425] [2020-10-06 00:13:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-06 00:13:54,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358803425] [2020-10-06 00:13:54,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:54,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:54,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [281767947] [2020-10-06 00:13:54,965 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:54,967 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:54,968 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-10-06 00:13:54,968 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:54,969 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:54,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:54,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:54,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:54,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:54,971 INFO L87 Difference]: Start difference. First operand 2671 states and 11075 transitions. Second operand 4 states. [2020-10-06 00:13:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:55,016 INFO L93 Difference]: Finished difference Result 2165 states and 8845 transitions. [2020-10-06 00:13:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:55,017 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-06 00:13:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:55,026 INFO L225 Difference]: With dead ends: 2165 [2020-10-06 00:13:55,027 INFO L226 Difference]: Without dead ends: 2165 [2020-10-06 00:13:55,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2020-10-06 00:13:55,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1659. [2020-10-06 00:13:55,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2020-10-06 00:13:55,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 6615 transitions. [2020-10-06 00:13:55,090 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 6615 transitions. Word has length 15 [2020-10-06 00:13:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:55,091 INFO L479 AbstractCegarLoop]: Abstraction has 1659 states and 6615 transitions. [2020-10-06 00:13:55,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 6615 transitions. [2020-10-06 00:13:55,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:13:55,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:55,093 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:55,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-06 00:13:55,093 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1514810044, now seen corresponding path program 1 times [2020-10-06 00:13:55,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:55,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784437446] [2020-10-06 00:13:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-06 00:13:55,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784437446] [2020-10-06 00:13:55,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:55,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:13:55,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [513259963] [2020-10-06 00:13:55,129 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:55,131 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:55,133 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-06 00:13:55,133 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:55,134 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:55,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:13:55,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:55,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:13:55,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:55,136 INFO L87 Difference]: Start difference. First operand 1659 states and 6615 transitions. Second operand 3 states. [2020-10-06 00:13:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:55,179 INFO L93 Difference]: Finished difference Result 2295 states and 9088 transitions. [2020-10-06 00:13:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:55,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-06 00:13:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:55,190 INFO L225 Difference]: With dead ends: 2295 [2020-10-06 00:13:55,190 INFO L226 Difference]: Without dead ends: 2295 [2020-10-06 00:13:55,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:13:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-10-06 00:13:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 1975. [2020-10-06 00:13:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2020-10-06 00:13:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 8000 transitions. [2020-10-06 00:13:55,263 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 8000 transitions. Word has length 17 [2020-10-06 00:13:55,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:55,264 INFO L479 AbstractCegarLoop]: Abstraction has 1975 states and 8000 transitions. [2020-10-06 00:13:55,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:13:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 8000 transitions. [2020-10-06 00:13:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:13:55,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:55,266 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:55,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-06 00:13:55,266 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:55,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:55,267 INFO L82 PathProgramCache]: Analyzing trace with hash -285527274, now seen corresponding path program 1 times [2020-10-06 00:13:55,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:55,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514317235] [2020-10-06 00:13:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:13:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-06 00:13:55,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514317235] [2020-10-06 00:13:55,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:13:55,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:13:55,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [338382346] [2020-10-06 00:13:55,297 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:13:55,298 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:13:55,301 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 31 transitions. [2020-10-06 00:13:55,301 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:13:55,301 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:13:55,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:13:55,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:13:55,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:13:55,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:13:55,302 INFO L87 Difference]: Start difference. First operand 1975 states and 8000 transitions. Second operand 4 states. [2020-10-06 00:13:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:13:55,342 INFO L93 Difference]: Finished difference Result 1655 states and 6592 transitions. [2020-10-06 00:13:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:13:55,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-06 00:13:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:13:55,348 INFO L225 Difference]: With dead ends: 1655 [2020-10-06 00:13:55,348 INFO L226 Difference]: Without dead ends: 1655 [2020-10-06 00:13:55,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:13:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-10-06 00:13:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1335. [2020-10-06 00:13:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-10-06 00:13:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 5184 transitions. [2020-10-06 00:13:55,395 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 5184 transitions. Word has length 18 [2020-10-06 00:13:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:13:55,395 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 5184 transitions. [2020-10-06 00:13:55,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:13:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 5184 transitions. [2020-10-06 00:13:55,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:13:55,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:13:55,397 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:13:55,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-06 00:13:55,397 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:13:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:13:55,397 INFO L82 PathProgramCache]: Analyzing trace with hash -285687237, now seen corresponding path program 1 times [2020-10-06 00:13:55,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:13:55,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466074341] [2020-10-06 00:13:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:13:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:55,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:13:55,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:13:55,418 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:13:55,418 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:13:55,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-06 00:13:55,419 WARN L363 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:13:55,419 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-06 00:13:55,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,428 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,428 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,429 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,429 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,430 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,430 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,431 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,431 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,432 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,432 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,433 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,433 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,434 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,434 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,435 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,435 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,436 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,436 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,437 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,437 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,438 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,438 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,439 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,439 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,440 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,440 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,441 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,441 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,442 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,447 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,448 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,448 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,450 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,450 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,452 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,452 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,453 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,454 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,454 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,455 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,455 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,456 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,456 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,456 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,457 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,457 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:13:55,458 INFO L251 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-06 00:13:55,458 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:13:55,458 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:13:55,458 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:13:55,459 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:13:55,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:13:55,459 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:13:55,459 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:13:55,459 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:13:55,460 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 98 transitions, 256 flow [2020-10-06 00:13:55,460 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-10-06 00:13:55,478 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-10-06 00:13:55,478 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-06 00:13:55,480 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 13/151 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 434 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2020-10-06 00:13:55,487 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 104 places, 98 transitions, 256 flow [2020-10-06 00:13:55,504 INFO L129 PetriNetUnfolder]: 13/151 cut-off events. [2020-10-06 00:13:55,504 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-06 00:13:55,506 INFO L80 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 151 events. 13/151 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 434 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 151. Up to 14 conditions per place. [2020-10-06 00:13:55,512 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 6120 [2020-10-06 00:13:55,513 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:13:56,469 INFO L206 etLargeBlockEncoding]: Checked pairs total: 10455 [2020-10-06 00:13:56,470 INFO L214 etLargeBlockEncoding]: Total number of compositions: 89 [2020-10-06 00:13:56,470 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 126 flow [2020-10-06 00:14:00,187 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 25940 states. [2020-10-06 00:14:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 25940 states. [2020-10-06 00:14:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:14:00,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:00,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:14:00,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:00,188 INFO L82 PathProgramCache]: Analyzing trace with hash 862156483, now seen corresponding path program 1 times [2020-10-06 00:14:00,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:00,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954511689] [2020-10-06 00:14:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:14:00,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954511689] [2020-10-06 00:14:00,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:00,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:14:00,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [723532006] [2020-10-06 00:14:00,212 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:00,212 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:00,213 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:14:00,213 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:00,213 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:00,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:14:00,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:00,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:14:00,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:00,214 INFO L87 Difference]: Start difference. First operand 25940 states. Second operand 3 states. [2020-10-06 00:14:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:00,886 INFO L93 Difference]: Finished difference Result 30660 states and 153869 transitions. [2020-10-06 00:14:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:00,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:14:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:00,992 INFO L225 Difference]: With dead ends: 30660 [2020-10-06 00:14:00,992 INFO L226 Difference]: Without dead ends: 30660 [2020-10-06 00:14:00,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30660 states. [2020-10-06 00:14:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30660 to 25560. [2020-10-06 00:14:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25560 states. [2020-10-06 00:14:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25560 states to 25560 states and 131665 transitions. [2020-10-06 00:14:04,285 INFO L78 Accepts]: Start accepts. Automaton has 25560 states and 131665 transitions. Word has length 5 [2020-10-06 00:14:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:04,285 INFO L479 AbstractCegarLoop]: Abstraction has 25560 states and 131665 transitions. [2020-10-06 00:14:04,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:14:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 25560 states and 131665 transitions. [2020-10-06 00:14:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:14:04,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:04,286 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:04,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-06 00:14:04,286 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash 422134040, now seen corresponding path program 1 times [2020-10-06 00:14:04,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:04,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889741917] [2020-10-06 00:14:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:14:04,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889741917] [2020-10-06 00:14:04,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:04,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:14:04,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1336681752] [2020-10-06 00:14:04,305 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:04,305 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:04,306 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:14:04,307 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:04,307 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:04,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:14:04,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:04,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:14:04,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:04,308 INFO L87 Difference]: Start difference. First operand 25560 states and 131665 transitions. Second operand 3 states. [2020-10-06 00:14:04,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:04,979 INFO L93 Difference]: Finished difference Result 36927 states and 186525 transitions. [2020-10-06 00:14:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:04,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:14:04,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:05,107 INFO L225 Difference]: With dead ends: 36927 [2020-10-06 00:14:05,108 INFO L226 Difference]: Without dead ends: 36927 [2020-10-06 00:14:05,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36927 states. [2020-10-06 00:14:09,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36927 to 30580. [2020-10-06 00:14:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30580 states. [2020-10-06 00:14:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30580 states to 30580 states and 158564 transitions. [2020-10-06 00:14:09,119 INFO L78 Accepts]: Start accepts. Automaton has 30580 states and 158564 transitions. Word has length 8 [2020-10-06 00:14:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:09,119 INFO L479 AbstractCegarLoop]: Abstraction has 30580 states and 158564 transitions. [2020-10-06 00:14:09,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:14:09,120 INFO L276 IsEmpty]: Start isEmpty. Operand 30580 states and 158564 transitions. [2020-10-06 00:14:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:14:09,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:09,120 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:09,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-06 00:14:09,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:09,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash 203971322, now seen corresponding path program 1 times [2020-10-06 00:14:09,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:09,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796627919] [2020-10-06 00:14:09,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-06 00:14:09,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796627919] [2020-10-06 00:14:09,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:09,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:14:09,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1610131028] [2020-10-06 00:14:09,143 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:09,143 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:09,144 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:14:09,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:09,146 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:09,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:14:09,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:09,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:14:09,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:14:09,147 INFO L87 Difference]: Start difference. First operand 30580 states and 158564 transitions. Second operand 4 states. [2020-10-06 00:14:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:09,340 INFO L93 Difference]: Finished difference Result 24233 states and 124256 transitions. [2020-10-06 00:14:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:09,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:14:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:09,422 INFO L225 Difference]: With dead ends: 24233 [2020-10-06 00:14:09,422 INFO L226 Difference]: Without dead ends: 24233 [2020-10-06 00:14:09,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:14:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24233 states. [2020-10-06 00:14:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24233 to 19165. [2020-10-06 00:14:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19165 states. [2020-10-06 00:14:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19165 states to 19165 states and 97114 transitions. [2020-10-06 00:14:10,993 INFO L78 Accepts]: Start accepts. Automaton has 19165 states and 97114 transitions. Word has length 9 [2020-10-06 00:14:10,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:10,994 INFO L479 AbstractCegarLoop]: Abstraction has 19165 states and 97114 transitions. [2020-10-06 00:14:10,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:14:10,994 INFO L276 IsEmpty]: Start isEmpty. Operand 19165 states and 97114 transitions. [2020-10-06 00:14:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:14:10,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:10,994 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:10,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-06 00:14:10,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:10,995 INFO L82 PathProgramCache]: Analyzing trace with hash 201256629, now seen corresponding path program 1 times [2020-10-06 00:14:10,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:10,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844673847] [2020-10-06 00:14:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:14:11,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844673847] [2020-10-06 00:14:11,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:11,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:14:11,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [40924419] [2020-10-06 00:14:11,022 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:11,022 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:11,023 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:14:11,023 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:11,023 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:11,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:14:11,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:11,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:14:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:14:11,024 INFO L87 Difference]: Start difference. First operand 19165 states and 97114 transitions. Second operand 4 states. [2020-10-06 00:14:11,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:11,160 INFO L93 Difference]: Finished difference Result 15344 states and 76976 transitions. [2020-10-06 00:14:11,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:11,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:14:11,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:11,211 INFO L225 Difference]: With dead ends: 15344 [2020-10-06 00:14:11,211 INFO L226 Difference]: Without dead ends: 15344 [2020-10-06 00:14:11,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:14:12,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15344 states. [2020-10-06 00:14:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15344 to 11523. [2020-10-06 00:14:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11523 states. [2020-10-06 00:14:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 56838 transitions. [2020-10-06 00:14:13,142 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 56838 transitions. Word has length 9 [2020-10-06 00:14:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:13,142 INFO L479 AbstractCegarLoop]: Abstraction has 11523 states and 56838 transitions. [2020-10-06 00:14:13,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:14:13,143 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 56838 transitions. [2020-10-06 00:14:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:14:13,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:13,143 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:13,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-06 00:14:13,144 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash -40974610, now seen corresponding path program 1 times [2020-10-06 00:14:13,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:13,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030989763] [2020-10-06 00:14:13,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:14:13,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030989763] [2020-10-06 00:14:13,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:13,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:14:13,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1125544264] [2020-10-06 00:14:13,158 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:13,159 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:13,160 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-06 00:14:13,160 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:13,160 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:13,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:14:13,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:13,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:14:13,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:13,161 INFO L87 Difference]: Start difference. First operand 11523 states and 56838 transitions. Second operand 3 states. [2020-10-06 00:14:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:13,346 INFO L93 Difference]: Finished difference Result 17226 states and 83578 transitions. [2020-10-06 00:14:13,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:13,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:14:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:13,431 INFO L225 Difference]: With dead ends: 17226 [2020-10-06 00:14:13,431 INFO L226 Difference]: Without dead ends: 17226 [2020-10-06 00:14:13,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17226 states. [2020-10-06 00:14:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17226 to 14368. [2020-10-06 00:14:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14368 states. [2020-10-06 00:14:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14368 states to 14368 states and 71601 transitions. [2020-10-06 00:14:14,254 INFO L78 Accepts]: Start accepts. Automaton has 14368 states and 71601 transitions. Word has length 11 [2020-10-06 00:14:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:14,254 INFO L479 AbstractCegarLoop]: Abstraction has 14368 states and 71601 transitions. [2020-10-06 00:14:14,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:14:14,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14368 states and 71601 transitions. [2020-10-06 00:14:14,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:14:14,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:14,255 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:14,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-06 00:14:14,255 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:14,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1270210238, now seen corresponding path program 1 times [2020-10-06 00:14:14,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:14,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775274638] [2020-10-06 00:14:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:14:14,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775274638] [2020-10-06 00:14:14,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:14,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:14:14,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1546190401] [2020-10-06 00:14:14,283 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:14,284 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:14,285 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 19 transitions. [2020-10-06 00:14:14,285 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:14,286 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:14,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:14:14,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:14,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:14:14,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:14:14,286 INFO L87 Difference]: Start difference. First operand 14368 states and 71601 transitions. Second operand 4 states. [2020-10-06 00:14:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:14,405 INFO L93 Difference]: Finished difference Result 11510 states and 56766 transitions. [2020-10-06 00:14:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:14,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 00:14:14,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:14,437 INFO L225 Difference]: With dead ends: 11510 [2020-10-06 00:14:14,437 INFO L226 Difference]: Without dead ends: 11510 [2020-10-06 00:14:14,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:14:14,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2020-10-06 00:14:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 8652. [2020-10-06 00:14:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2020-10-06 00:14:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 41931 transitions. [2020-10-06 00:14:15,147 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 41931 transitions. Word has length 12 [2020-10-06 00:14:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:15,147 INFO L479 AbstractCegarLoop]: Abstraction has 8652 states and 41931 transitions. [2020-10-06 00:14:15,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:14:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 41931 transitions. [2020-10-06 00:14:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:14:15,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:15,148 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:15,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-06 00:14:15,148 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1064251902, now seen corresponding path program 1 times [2020-10-06 00:14:15,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:15,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162290363] [2020-10-06 00:14:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-06 00:14:15,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162290363] [2020-10-06 00:14:15,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:15,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:14:15,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [74210164] [2020-10-06 00:14:15,175 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:15,176 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:15,177 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-06 00:14:15,177 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:15,177 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:15,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:14:15,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:15,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:14:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:15,178 INFO L87 Difference]: Start difference. First operand 8652 states and 41931 transitions. Second operand 3 states. [2020-10-06 00:14:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:15,277 INFO L93 Difference]: Finished difference Result 12888 states and 61498 transitions. [2020-10-06 00:14:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:15,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-06 00:14:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:15,312 INFO L225 Difference]: With dead ends: 12888 [2020-10-06 00:14:15,312 INFO L226 Difference]: Without dead ends: 12888 [2020-10-06 00:14:15,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12888 states. [2020-10-06 00:14:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12888 to 10765. [2020-10-06 00:14:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10765 states. [2020-10-06 00:14:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10765 states to 10765 states and 52746 transitions. [2020-10-06 00:14:15,705 INFO L78 Accepts]: Start accepts. Automaton has 10765 states and 52746 transitions. Word has length 14 [2020-10-06 00:14:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:15,706 INFO L479 AbstractCegarLoop]: Abstraction has 10765 states and 52746 transitions. [2020-10-06 00:14:15,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:14:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 10765 states and 52746 transitions. [2020-10-06 00:14:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:14:15,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:15,707 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:15,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-06 00:14:15,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:15,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1367932408, now seen corresponding path program 1 times [2020-10-06 00:14:15,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:15,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090638550] [2020-10-06 00:14:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-06 00:14:15,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090638550] [2020-10-06 00:14:15,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:15,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:14:15,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2058868151] [2020-10-06 00:14:15,748 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:15,749 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:15,750 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 28 transitions. [2020-10-06 00:14:15,750 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:15,750 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:15,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:14:15,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:15,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:14:15,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:14:15,751 INFO L87 Difference]: Start difference. First operand 10765 states and 52746 transitions. Second operand 4 states. [2020-10-06 00:14:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:15,838 INFO L93 Difference]: Finished difference Result 8642 states and 41871 transitions. [2020-10-06 00:14:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:15,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-06 00:14:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:15,862 INFO L225 Difference]: With dead ends: 8642 [2020-10-06 00:14:15,862 INFO L226 Difference]: Without dead ends: 8642 [2020-10-06 00:14:15,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:14:15,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8642 states. [2020-10-06 00:14:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8642 to 6519. [2020-10-06 00:14:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6519 states. [2020-10-06 00:14:16,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6519 states to 6519 states and 30996 transitions. [2020-10-06 00:14:16,102 INFO L78 Accepts]: Start accepts. Automaton has 6519 states and 30996 transitions. Word has length 15 [2020-10-06 00:14:16,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:16,102 INFO L479 AbstractCegarLoop]: Abstraction has 6519 states and 30996 transitions. [2020-10-06 00:14:16,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:14:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6519 states and 30996 transitions. [2020-10-06 00:14:16,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:14:16,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:16,103 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:16,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-06 00:14:16,103 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:16,104 INFO L82 PathProgramCache]: Analyzing trace with hash 152749525, now seen corresponding path program 1 times [2020-10-06 00:14:16,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:16,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446049818] [2020-10-06 00:14:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-06 00:14:16,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446049818] [2020-10-06 00:14:16,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:16,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:14:16,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [377052911] [2020-10-06 00:14:16,134 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:16,136 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:16,137 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-06 00:14:16,137 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:16,137 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:16,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:14:16,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:16,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:14:16,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:16,138 INFO L87 Difference]: Start difference. First operand 6519 states and 30996 transitions. Second operand 3 states. [2020-10-06 00:14:16,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:16,224 INFO L93 Difference]: Finished difference Result 9576 states and 44989 transitions. [2020-10-06 00:14:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:16,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-06 00:14:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:16,249 INFO L225 Difference]: With dead ends: 9576 [2020-10-06 00:14:16,249 INFO L226 Difference]: Without dead ends: 9576 [2020-10-06 00:14:16,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2020-10-06 00:14:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 8044. [2020-10-06 00:14:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8044 states. [2020-10-06 00:14:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 38736 transitions. [2020-10-06 00:14:16,770 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 38736 transitions. Word has length 17 [2020-10-06 00:14:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:16,770 INFO L479 AbstractCegarLoop]: Abstraction has 8044 states and 38736 transitions. [2020-10-06 00:14:16,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:14:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 38736 transitions. [2020-10-06 00:14:16,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:14:16,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:16,773 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:16,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-06 00:14:16,774 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:16,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:16,774 INFO L82 PathProgramCache]: Analyzing trace with hash 440270196, now seen corresponding path program 1 times [2020-10-06 00:14:16,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:16,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311689887] [2020-10-06 00:14:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-06 00:14:16,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311689887] [2020-10-06 00:14:16,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:16,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:14:16,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1085708415] [2020-10-06 00:14:16,803 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:16,805 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:16,807 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 25 transitions. [2020-10-06 00:14:16,807 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:16,807 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:16,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:14:16,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:14:16,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:14:16,808 INFO L87 Difference]: Start difference. First operand 8044 states and 38736 transitions. Second operand 4 states. [2020-10-06 00:14:16,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:16,883 INFO L93 Difference]: Finished difference Result 6512 states and 30951 transitions. [2020-10-06 00:14:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:16,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-06 00:14:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:16,902 INFO L225 Difference]: With dead ends: 6512 [2020-10-06 00:14:16,902 INFO L226 Difference]: Without dead ends: 6512 [2020-10-06 00:14:16,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:14:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2020-10-06 00:14:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 4980. [2020-10-06 00:14:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4980 states. [2020-10-06 00:14:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 23166 transitions. [2020-10-06 00:14:17,077 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 23166 transitions. Word has length 18 [2020-10-06 00:14:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:17,077 INFO L479 AbstractCegarLoop]: Abstraction has 4980 states and 23166 transitions. [2020-10-06 00:14:17,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:14:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 23166 transitions. [2020-10-06 00:14:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:14:17,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:17,079 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:17,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-06 00:14:17,080 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2026385382, now seen corresponding path program 1 times [2020-10-06 00:14:17,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:17,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076382539] [2020-10-06 00:14:17,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-06 00:14:17,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076382539] [2020-10-06 00:14:17,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:17,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:14:17,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1555206194] [2020-10-06 00:14:17,102 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:17,103 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:17,105 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-10-06 00:14:17,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:17,105 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:17,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:14:17,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:17,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:14:17,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:17,106 INFO L87 Difference]: Start difference. First operand 4980 states and 23166 transitions. Second operand 3 states. [2020-10-06 00:14:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:17,179 INFO L93 Difference]: Finished difference Result 6912 states and 31999 transitions. [2020-10-06 00:14:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:17,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-06 00:14:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:17,200 INFO L225 Difference]: With dead ends: 6912 [2020-10-06 00:14:17,200 INFO L226 Difference]: Without dead ends: 6912 [2020-10-06 00:14:17,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2020-10-06 00:14:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 5944. [2020-10-06 00:14:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5944 states. [2020-10-06 00:14:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 28053 transitions. [2020-10-06 00:14:17,378 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 28053 transitions. Word has length 20 [2020-10-06 00:14:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:17,379 INFO L479 AbstractCegarLoop]: Abstraction has 5944 states and 28053 transitions. [2020-10-06 00:14:17,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:14:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 28053 transitions. [2020-10-06 00:14:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:14:17,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:17,381 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:17,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-06 00:14:17,382 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:17,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:17,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1606559931, now seen corresponding path program 1 times [2020-10-06 00:14:17,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:17,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241602131] [2020-10-06 00:14:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-06 00:14:17,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241602131] [2020-10-06 00:14:17,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:17,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:14:17,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2022917801] [2020-10-06 00:14:17,417 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:17,419 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:17,421 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 34 transitions. [2020-10-06 00:14:17,422 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:17,422 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:17,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:14:17,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:14:17,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:14:17,423 INFO L87 Difference]: Start difference. First operand 5944 states and 28053 transitions. Second operand 4 states. [2020-10-06 00:14:17,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:17,490 INFO L93 Difference]: Finished difference Result 4976 states and 23139 transitions. [2020-10-06 00:14:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:17,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-06 00:14:17,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:17,509 INFO L225 Difference]: With dead ends: 4976 [2020-10-06 00:14:17,509 INFO L226 Difference]: Without dead ends: 4976 [2020-10-06 00:14:17,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:14:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2020-10-06 00:14:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4008. [2020-10-06 00:14:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2020-10-06 00:14:17,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 18225 transitions. [2020-10-06 00:14:17,685 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 18225 transitions. Word has length 21 [2020-10-06 00:14:17,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:14:17,685 INFO L479 AbstractCegarLoop]: Abstraction has 4008 states and 18225 transitions. [2020-10-06 00:14:17,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:14:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 18225 transitions. [2020-10-06 00:14:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:14:17,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:17,688 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:14:17,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-06 00:14:17,689 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1606739912, now seen corresponding path program 1 times [2020-10-06 00:14:17,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:17,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375505652] [2020-10-06 00:14:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:14:17,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:14:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:14:17,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:14:17,712 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:14:17,713 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:14:17,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-06 00:14:17,713 WARN L363 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:14:17,714 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-06 00:14:17,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,723 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,723 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,724 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,724 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,725 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,725 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,726 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,726 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,727 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,727 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,728 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,728 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,729 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,729 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,730 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,731 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,731 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,732 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,732 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,733 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,733 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,734 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,734 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,735 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,735 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,736 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,736 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,737 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,737 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,738 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,738 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,739 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,739 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,746 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,747 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,747 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,749 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,749 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,751 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,751 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,752 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,753 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,753 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,754 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,755 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,755 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,756 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,756 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,757 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,757 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:14:17,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-06 00:14:17,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:14:17,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:14:17,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:14:17,758 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:14:17,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:14:17,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:14:17,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:14:17,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:14:17,760 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 111 transitions, 299 flow [2020-10-06 00:14:17,760 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-10-06 00:14:17,783 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-10-06 00:14:17,783 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-06 00:14:17,785 INFO L80 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 173 events. 15/173 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 517 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 182. Up to 16 conditions per place. [2020-10-06 00:14:17,795 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 118 places, 111 transitions, 299 flow [2020-10-06 00:14:17,817 INFO L129 PetriNetUnfolder]: 15/173 cut-off events. [2020-10-06 00:14:17,817 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-06 00:14:17,819 INFO L80 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 173 events. 15/173 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 517 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 182. Up to 16 conditions per place. [2020-10-06 00:14:17,824 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 8232 [2020-10-06 00:14:17,824 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:14:18,809 INFO L206 etLargeBlockEncoding]: Checked pairs total: 13260 [2020-10-06 00:14:18,809 INFO L214 etLargeBlockEncoding]: Total number of compositions: 95 [2020-10-06 00:14:18,810 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 34 transitions, 145 flow [2020-10-06 00:14:57,024 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 103764 states. [2020-10-06 00:14:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 103764 states. [2020-10-06 00:14:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-10-06 00:14:57,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:14:57,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-10-06 00:14:57,025 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:14:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:14:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1079248743, now seen corresponding path program 1 times [2020-10-06 00:14:57,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:14:57,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808934478] [2020-10-06 00:14:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:14:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:14:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 00:14:57,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808934478] [2020-10-06 00:14:57,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:14:57,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:14:57,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1492364878] [2020-10-06 00:14:57,040 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:14:57,040 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:14:57,041 INFO L258 McrAutomatonBuilder]: Finished intersection with 6 states and 5 transitions. [2020-10-06 00:14:57,041 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:14:57,041 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:14:57,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:14:57,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:14:57,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:14:57,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:14:57,042 INFO L87 Difference]: Start difference. First operand 103764 states. Second operand 3 states. [2020-10-06 00:14:57,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:14:57,981 INFO L93 Difference]: Finished difference Result 122811 states and 708293 transitions. [2020-10-06 00:14:57,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:14:57,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-10-06 00:14:57,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:14:58,499 INFO L225 Difference]: With dead ends: 122811 [2020-10-06 00:14:58,499 INFO L226 Difference]: Without dead ends: 122811 [2020-10-06 00:14:58,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:15:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122811 states. [2020-10-06 00:15:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122811 to 102354. [2020-10-06 00:15:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102354 states. [2020-10-06 00:15:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102354 states to 102354 states and 603935 transitions. [2020-10-06 00:15:16,252 INFO L78 Accepts]: Start accepts. Automaton has 102354 states and 603935 transitions. Word has length 5 [2020-10-06 00:15:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:15:16,253 INFO L479 AbstractCegarLoop]: Abstraction has 102354 states and 603935 transitions. [2020-10-06 00:15:16,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:15:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 102354 states and 603935 transitions. [2020-10-06 00:15:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 00:15:16,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:15:16,253 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:15:16,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-06 00:15:16,253 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:15:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:15:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash -423468189, now seen corresponding path program 1 times [2020-10-06 00:15:16,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:15:16,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388541719] [2020-10-06 00:15:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:15:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:15:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:15:16,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388541719] [2020-10-06 00:15:16,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:15:16,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:15:16,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [584180357] [2020-10-06 00:15:16,272 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:15:16,273 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:15:16,273 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 00:15:16,273 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:15:16,273 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:15:16,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:15:16,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:15:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:15:16,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:15:16,274 INFO L87 Difference]: Start difference. First operand 102354 states and 603935 transitions. Second operand 3 states. [2020-10-06 00:15:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:15:17,340 INFO L93 Difference]: Finished difference Result 148254 states and 859795 transitions. [2020-10-06 00:15:17,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:15:17,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 00:15:17,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:15:25,873 INFO L225 Difference]: With dead ends: 148254 [2020-10-06 00:15:25,873 INFO L226 Difference]: Without dead ends: 148254 [2020-10-06 00:15:25,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:15:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148254 states. [2020-10-06 00:15:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148254 to 122716. [2020-10-06 00:15:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122716 states. [2020-10-06 00:15:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122716 states to 122716 states and 728220 transitions. [2020-10-06 00:15:39,653 INFO L78 Accepts]: Start accepts. Automaton has 122716 states and 728220 transitions. Word has length 8 [2020-10-06 00:15:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:15:39,654 INFO L479 AbstractCegarLoop]: Abstraction has 122716 states and 728220 transitions. [2020-10-06 00:15:39,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:15:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand 122716 states and 728220 transitions. [2020-10-06 00:15:39,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:15:39,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:15:39,654 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:15:39,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-06 00:15:39,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:15:39,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:15:39,655 INFO L82 PathProgramCache]: Analyzing trace with hash -242594376, now seen corresponding path program 1 times [2020-10-06 00:15:39,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:15:39,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145474548] [2020-10-06 00:15:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:15:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:15:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:15:39,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145474548] [2020-10-06 00:15:39,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:15:39,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:15:39,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [466793750] [2020-10-06 00:15:39,679 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:15:39,680 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:15:39,681 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:15:39,681 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:15:39,685 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:15:39,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:15:39,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:15:39,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:15:39,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:15:39,686 INFO L87 Difference]: Start difference. First operand 122716 states and 728220 transitions. Second operand 4 states. [2020-10-06 00:15:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:15:42,010 INFO L93 Difference]: Finished difference Result 97178 states and 571107 transitions. [2020-10-06 00:15:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:15:42,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:15:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:15:42,419 INFO L225 Difference]: With dead ends: 97178 [2020-10-06 00:15:42,419 INFO L226 Difference]: Without dead ends: 97178 [2020-10-06 00:15:42,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:15:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97178 states. [2020-10-06 00:15:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97178 to 76759. [2020-10-06 00:15:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76759 states. [2020-10-06 00:15:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76759 states to 76759 states and 446504 transitions. [2020-10-06 00:15:56,618 INFO L78 Accepts]: Start accepts. Automaton has 76759 states and 446504 transitions. Word has length 9 [2020-10-06 00:15:56,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:15:56,618 INFO L479 AbstractCegarLoop]: Abstraction has 76759 states and 446504 transitions. [2020-10-06 00:15:56,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:15:56,618 INFO L276 IsEmpty]: Start isEmpty. Operand 76759 states and 446504 transitions. [2020-10-06 00:15:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-06 00:15:56,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:15:56,619 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:15:56,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-06 00:15:56,619 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:15:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:15:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash -242609250, now seen corresponding path program 1 times [2020-10-06 00:15:56,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:15:56,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203173644] [2020-10-06 00:15:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:15:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:15:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-06 00:15:56,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203173644] [2020-10-06 00:15:56,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:15:56,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:15:56,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1033142816] [2020-10-06 00:15:56,655 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:15:56,656 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:15:56,657 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 16 transitions. [2020-10-06 00:15:56,657 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:15:56,658 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:15:56,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:15:56,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:15:56,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:15:56,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:15:56,659 INFO L87 Difference]: Start difference. First operand 76759 states and 446504 transitions. Second operand 4 states. [2020-10-06 00:15:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:15:58,042 INFO L93 Difference]: Finished difference Result 61421 states and 354199 transitions. [2020-10-06 00:15:58,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:15:58,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-06 00:15:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:15:58,283 INFO L225 Difference]: With dead ends: 61421 [2020-10-06 00:15:58,283 INFO L226 Difference]: Without dead ends: 61421 [2020-10-06 00:15:58,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:16:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61421 states. [2020-10-06 00:16:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61421 to 46083. [2020-10-06 00:16:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46083 states. [2020-10-06 00:16:07,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46083 states to 46083 states and 261894 transitions. [2020-10-06 00:16:07,183 INFO L78 Accepts]: Start accepts. Automaton has 46083 states and 261894 transitions. Word has length 9 [2020-10-06 00:16:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:07,183 INFO L479 AbstractCegarLoop]: Abstraction has 46083 states and 261894 transitions. [2020-10-06 00:16:07,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:16:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 46083 states and 261894 transitions. [2020-10-06 00:16:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 00:16:07,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:07,184 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:07,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-06 00:16:07,184 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:07,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1404864702, now seen corresponding path program 1 times [2020-10-06 00:16:07,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:07,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679246686] [2020-10-06 00:16:07,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:16:07,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679246686] [2020-10-06 00:16:07,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:07,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:16:07,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [159503503] [2020-10-06 00:16:07,205 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:07,206 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:07,206 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-06 00:16:07,207 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:07,207 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:07,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:16:07,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:07,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:16:07,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:07,208 INFO L87 Difference]: Start difference. First operand 46083 states and 261894 transitions. Second operand 3 states. [2020-10-06 00:16:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:07,754 INFO L93 Difference]: Finished difference Result 69057 states and 386770 transitions. [2020-10-06 00:16:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:07,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-06 00:16:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:08,011 INFO L225 Difference]: With dead ends: 69057 [2020-10-06 00:16:08,011 INFO L226 Difference]: Without dead ends: 69057 [2020-10-06 00:16:08,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69057 states. [2020-10-06 00:16:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69057 to 57562. [2020-10-06 00:16:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57562 states. [2020-10-06 00:16:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57562 states to 57562 states and 330031 transitions. [2020-10-06 00:16:16,732 INFO L78 Accepts]: Start accepts. Automaton has 57562 states and 330031 transitions. Word has length 11 [2020-10-06 00:16:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:16,733 INFO L479 AbstractCegarLoop]: Abstraction has 57562 states and 330031 transitions. [2020-10-06 00:16:16,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:16:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 57562 states and 330031 transitions. [2020-10-06 00:16:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 00:16:16,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:16,733 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:16,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-06 00:16:16,734 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:16,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:16,734 INFO L82 PathProgramCache]: Analyzing trace with hash -601130141, now seen corresponding path program 1 times [2020-10-06 00:16:16,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:16,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870865502] [2020-10-06 00:16:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-06 00:16:16,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870865502] [2020-10-06 00:16:16,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:16,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:16:16,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2007404293] [2020-10-06 00:16:16,755 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:16,756 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:16,757 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-10-06 00:16:16,757 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:16,757 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:16,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:16:16,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:16,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:16:16,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:16:16,758 INFO L87 Difference]: Start difference. First operand 57562 states and 330031 transitions. Second operand 4 states. [2020-10-06 00:16:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:17,093 INFO L93 Difference]: Finished difference Result 46067 states and 261797 transitions. [2020-10-06 00:16:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:17,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-06 00:16:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:17,257 INFO L225 Difference]: With dead ends: 46067 [2020-10-06 00:16:17,257 INFO L226 Difference]: Without dead ends: 46067 [2020-10-06 00:16:17,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:16:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46067 states. [2020-10-06 00:16:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46067 to 34572. [2020-10-06 00:16:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34572 states. [2020-10-06 00:16:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34572 states to 34572 states and 193563 transitions. [2020-10-06 00:16:21,528 INFO L78 Accepts]: Start accepts. Automaton has 34572 states and 193563 transitions. Word has length 12 [2020-10-06 00:16:21,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:21,528 INFO L479 AbstractCegarLoop]: Abstraction has 34572 states and 193563 transitions. [2020-10-06 00:16:21,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:16:21,528 INFO L276 IsEmpty]: Start isEmpty. Operand 34572 states and 193563 transitions. [2020-10-06 00:16:21,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-06 00:16:21,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:21,529 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:21,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-06 00:16:21,529 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:21,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1950756351, now seen corresponding path program 1 times [2020-10-06 00:16:21,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:21,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125975589] [2020-10-06 00:16:21,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-06 00:16:21,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125975589] [2020-10-06 00:16:21,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:21,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:16:21,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [555013390] [2020-10-06 00:16:21,551 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:21,552 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:21,553 INFO L258 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2020-10-06 00:16:21,553 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:21,554 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:21,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:16:21,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:21,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:16:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:21,554 INFO L87 Difference]: Start difference. First operand 34572 states and 193563 transitions. Second operand 3 states. [2020-10-06 00:16:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:21,910 INFO L93 Difference]: Finished difference Result 51759 states and 285634 transitions. [2020-10-06 00:16:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:21,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-06 00:16:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:22,101 INFO L225 Difference]: With dead ends: 51759 [2020-10-06 00:16:22,101 INFO L226 Difference]: Without dead ends: 51759 [2020-10-06 00:16:22,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:27,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51759 states. [2020-10-06 00:16:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51759 to 43159. [2020-10-06 00:16:28,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43159 states. [2020-10-06 00:16:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43159 states to 43159 states and 243856 transitions. [2020-10-06 00:16:28,325 INFO L78 Accepts]: Start accepts. Automaton has 43159 states and 243856 transitions. Word has length 14 [2020-10-06 00:16:28,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:28,325 INFO L479 AbstractCegarLoop]: Abstraction has 43159 states and 243856 transitions. [2020-10-06 00:16:28,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:16:28,325 INFO L276 IsEmpty]: Start isEmpty. Operand 43159 states and 243856 transitions. [2020-10-06 00:16:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-06 00:16:28,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:28,332 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:28,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-06 00:16:28,332 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:28,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:28,332 INFO L82 PathProgramCache]: Analyzing trace with hash 343906870, now seen corresponding path program 1 times [2020-10-06 00:16:28,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:28,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586852518] [2020-10-06 00:16:28,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-06 00:16:28,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586852518] [2020-10-06 00:16:28,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:28,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:16:28,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [274108987] [2020-10-06 00:16:28,354 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:28,355 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:28,356 INFO L258 McrAutomatonBuilder]: Finished intersection with 20 states and 22 transitions. [2020-10-06 00:16:28,356 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:28,356 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:28,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:16:28,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:28,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:16:28,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:16:28,357 INFO L87 Difference]: Start difference. First operand 43159 states and 243856 transitions. Second operand 4 states. [2020-10-06 00:16:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:28,614 INFO L93 Difference]: Finished difference Result 34559 states and 193478 transitions. [2020-10-06 00:16:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:28,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-06 00:16:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:28,740 INFO L225 Difference]: With dead ends: 34559 [2020-10-06 00:16:28,740 INFO L226 Difference]: Without dead ends: 34559 [2020-10-06 00:16:28,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:16:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34559 states. [2020-10-06 00:16:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34559 to 25959. [2020-10-06 00:16:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25959 states. [2020-10-06 00:16:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25959 states to 25959 states and 143100 transitions. [2020-10-06 00:16:31,079 INFO L78 Accepts]: Start accepts. Automaton has 25959 states and 143100 transitions. Word has length 15 [2020-10-06 00:16:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:31,080 INFO L479 AbstractCegarLoop]: Abstraction has 25959 states and 143100 transitions. [2020-10-06 00:16:31,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:16:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25959 states and 143100 transitions. [2020-10-06 00:16:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-06 00:16:31,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:31,081 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:31,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-06 00:16:31,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:31,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:31,081 INFO L82 PathProgramCache]: Analyzing trace with hash -408592942, now seen corresponding path program 1 times [2020-10-06 00:16:31,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:31,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018925536] [2020-10-06 00:16:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-06 00:16:31,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018925536] [2020-10-06 00:16:31,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:31,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:16:31,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1388128013] [2020-10-06 00:16:31,101 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:31,102 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:31,103 INFO L258 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2020-10-06 00:16:31,103 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:31,104 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:31,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:16:31,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:31,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:16:31,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:31,104 INFO L87 Difference]: Start difference. First operand 25959 states and 143100 transitions. Second operand 3 states. [2020-10-06 00:16:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:31,390 INFO L93 Difference]: Finished difference Result 38727 states and 210643 transitions. [2020-10-06 00:16:31,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:31,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-06 00:16:31,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:31,524 INFO L225 Difference]: With dead ends: 38727 [2020-10-06 00:16:31,524 INFO L226 Difference]: Without dead ends: 38727 [2020-10-06 00:16:31,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38727 states. [2020-10-06 00:16:33,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38727 to 32338. [2020-10-06 00:16:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32338 states. [2020-10-06 00:16:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32338 states to 32338 states and 180031 transitions. [2020-10-06 00:16:34,118 INFO L78 Accepts]: Start accepts. Automaton has 32338 states and 180031 transitions. Word has length 17 [2020-10-06 00:16:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:34,119 INFO L479 AbstractCegarLoop]: Abstraction has 32338 states and 180031 transitions. [2020-10-06 00:16:34,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:16:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 32338 states and 180031 transitions. [2020-10-06 00:16:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-06 00:16:34,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:34,120 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:34,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-06 00:16:34,120 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:34,120 INFO L82 PathProgramCache]: Analyzing trace with hash 218524327, now seen corresponding path program 1 times [2020-10-06 00:16:34,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:34,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704067920] [2020-10-06 00:16:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-06 00:16:34,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704067920] [2020-10-06 00:16:34,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:34,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:16:34,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1020452752] [2020-10-06 00:16:34,143 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:34,144 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:34,146 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 25 transitions. [2020-10-06 00:16:34,146 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:34,147 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:34,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:16:34,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:34,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:16:34,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:16:34,148 INFO L87 Difference]: Start difference. First operand 32338 states and 180031 transitions. Second operand 4 states. [2020-10-06 00:16:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:34,381 INFO L93 Difference]: Finished difference Result 25949 states and 143030 transitions. [2020-10-06 00:16:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:34,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-06 00:16:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:34,507 INFO L225 Difference]: With dead ends: 25949 [2020-10-06 00:16:34,507 INFO L226 Difference]: Without dead ends: 25949 [2020-10-06 00:16:34,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:16:35,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25949 states. [2020-10-06 00:16:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25949 to 19560. [2020-10-06 00:16:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19560 states. [2020-10-06 00:16:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19560 states to 19560 states and 106029 transitions. [2020-10-06 00:16:36,048 INFO L78 Accepts]: Start accepts. Automaton has 19560 states and 106029 transitions. Word has length 18 [2020-10-06 00:16:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:36,049 INFO L479 AbstractCegarLoop]: Abstraction has 19560 states and 106029 transitions. [2020-10-06 00:16:36,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:16:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19560 states and 106029 transitions. [2020-10-06 00:16:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-06 00:16:36,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:36,051 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:36,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-06 00:16:36,051 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:36,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:36,052 INFO L82 PathProgramCache]: Analyzing trace with hash -640482004, now seen corresponding path program 1 times [2020-10-06 00:16:36,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:36,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738006960] [2020-10-06 00:16:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-06 00:16:36,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738006960] [2020-10-06 00:16:36,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:36,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:16:36,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [641334545] [2020-10-06 00:16:36,075 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:36,077 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:36,079 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2020-10-06 00:16:36,079 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:36,079 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:36,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:16:36,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:36,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:16:36,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:36,080 INFO L87 Difference]: Start difference. First operand 19560 states and 106029 transitions. Second operand 3 states. [2020-10-06 00:16:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:36,287 INFO L93 Difference]: Finished difference Result 28773 states and 154399 transitions. [2020-10-06 00:16:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:36,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-06 00:16:36,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:36,382 INFO L225 Difference]: With dead ends: 28773 [2020-10-06 00:16:36,383 INFO L226 Difference]: Without dead ends: 28773 [2020-10-06 00:16:36,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28773 states. [2020-10-06 00:16:37,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28773 to 24163. [2020-10-06 00:16:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24163 states. [2020-10-06 00:16:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24163 states to 24163 states and 132493 transitions. [2020-10-06 00:16:37,977 INFO L78 Accepts]: Start accepts. Automaton has 24163 states and 132493 transitions. Word has length 20 [2020-10-06 00:16:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:37,977 INFO L479 AbstractCegarLoop]: Abstraction has 24163 states and 132493 transitions. [2020-10-06 00:16:37,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:16:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 24163 states and 132493 transitions. [2020-10-06 00:16:37,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-06 00:16:37,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:37,980 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:37,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-06 00:16:37,980 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1619896945, now seen corresponding path program 1 times [2020-10-06 00:16:37,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:37,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468732323] [2020-10-06 00:16:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-06 00:16:38,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468732323] [2020-10-06 00:16:38,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:38,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 00:16:38,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [461356644] [2020-10-06 00:16:38,013 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:38,014 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:38,017 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 28 transitions. [2020-10-06 00:16:38,017 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:38,018 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:38,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 00:16:38,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:38,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 00:16:38,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 00:16:38,018 INFO L87 Difference]: Start difference. First operand 24163 states and 132493 transitions. Second operand 4 states. [2020-10-06 00:16:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:38,179 INFO L93 Difference]: Finished difference Result 19553 states and 105977 transitions. [2020-10-06 00:16:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:38,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-06 00:16:38,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:38,260 INFO L225 Difference]: With dead ends: 19553 [2020-10-06 00:16:38,260 INFO L226 Difference]: Without dead ends: 19553 [2020-10-06 00:16:38,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 00:16:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19553 states. [2020-10-06 00:16:39,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19553 to 14943. [2020-10-06 00:16:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14943 states. [2020-10-06 00:16:39,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14943 states to 14943 states and 79461 transitions. [2020-10-06 00:16:39,118 INFO L78 Accepts]: Start accepts. Automaton has 14943 states and 79461 transitions. Word has length 21 [2020-10-06 00:16:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:39,118 INFO L479 AbstractCegarLoop]: Abstraction has 14943 states and 79461 transitions. [2020-10-06 00:16:39,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 00:16:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand 14943 states and 79461 transitions. [2020-10-06 00:16:39,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-06 00:16:39,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:39,123 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:39,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-06 00:16:39,123 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:39,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1741862694, now seen corresponding path program 1 times [2020-10-06 00:16:39,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:39,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725289232] [2020-10-06 00:16:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 00:16:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-06 00:16:39,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725289232] [2020-10-06 00:16:39,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 00:16:39,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 00:16:39,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [756686815] [2020-10-06 00:16:39,139 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 00:16:39,141 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 00:16:39,143 INFO L258 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2020-10-06 00:16:39,144 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 00:16:39,144 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 00:16:39,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 00:16:39,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 00:16:39,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 00:16:39,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:39,145 INFO L87 Difference]: Start difference. First operand 14943 states and 79461 transitions. Second operand 3 states. [2020-10-06 00:16:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 00:16:39,297 INFO L93 Difference]: Finished difference Result 20763 states and 109990 transitions. [2020-10-06 00:16:39,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 00:16:39,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-10-06 00:16:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 00:16:39,360 INFO L225 Difference]: With dead ends: 20763 [2020-10-06 00:16:39,361 INFO L226 Difference]: Without dead ends: 20763 [2020-10-06 00:16:39,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 00:16:39,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20763 states. [2020-10-06 00:16:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20763 to 17851. [2020-10-06 00:16:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17851 states. [2020-10-06 00:16:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17851 states to 17851 states and 96166 transitions. [2020-10-06 00:16:40,495 INFO L78 Accepts]: Start accepts. Automaton has 17851 states and 96166 transitions. Word has length 23 [2020-10-06 00:16:40,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 00:16:40,496 INFO L479 AbstractCegarLoop]: Abstraction has 17851 states and 96166 transitions. [2020-10-06 00:16:40,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 00:16:40,496 INFO L276 IsEmpty]: Start isEmpty. Operand 17851 states and 96166 transitions. [2020-10-06 00:16:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-06 00:16:40,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 00:16:40,501 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 00:16:40,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-06 00:16:40,502 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 00:16:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 00:16:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1837019004, now seen corresponding path program 1 times [2020-10-06 00:16:40,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 00:16:40,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512487086] [2020-10-06 00:16:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 00:16:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:16:40,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:16:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-06 00:16:40,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-06 00:16:40,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-06 00:16:40,522 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-06 00:16:40,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-06 00:16:40,522 WARN L363 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-06 00:16:40,523 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-10-06 00:16:40,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,533 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,533 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,534 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,534 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,535 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,535 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,536 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,537 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,537 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,538 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,539 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,540 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,540 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,541 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,541 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,542 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,542 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,543 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,544 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,544 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,545 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,546 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,547 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,547 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,548 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,548 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,549 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,549 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,552 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,553 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,553 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,560 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,561 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,561 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,566 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,568 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~l~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,571 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 00:16:40,573 INFO L251 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-06 00:16:40,573 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 00:16:40,573 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 00:16:40,573 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 00:16:40,573 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 00:16:40,574 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 00:16:40,574 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 00:16:40,574 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 00:16:40,574 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 00:16:40,575 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 124 transitions, 344 flow [2020-10-06 00:16:40,575 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-10-06 00:16:40,603 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-10-06 00:16:40,603 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-06 00:16:40,605 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 17/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 596 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 214. Up to 18 conditions per place. [2020-10-06 00:16:40,611 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 344 flow [2020-10-06 00:16:40,642 INFO L129 PetriNetUnfolder]: 17/195 cut-off events. [2020-10-06 00:16:40,643 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-06 00:16:40,647 INFO L80 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 195 events. 17/195 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 596 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 214. Up to 18 conditions per place. [2020-10-06 00:16:40,658 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 10656 [2020-10-06 00:16:40,659 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 00:16:41,877 INFO L206 etLargeBlockEncoding]: Checked pairs total: 14959 [2020-10-06 00:16:41,877 INFO L214 etLargeBlockEncoding]: Total number of compositions: 105 [2020-10-06 00:16:41,877 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54 places, 38 transitions, 172 flow Received shutdown request... [2020-10-06 00:17:30,156 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-06 00:17:30,159 WARN L228 ceAbstractionStarter]: Timeout [2020-10-06 00:17:30,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 12:17:30 BasicIcfg [2020-10-06 00:17:30,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 00:17:30,166 INFO L168 Benchmark]: Toolchain (without parser) took 226391.54 ms. Allocated memory was 139.5 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 100.9 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-10-06 00:17:30,167 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-06 00:17:30,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.73 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 100.7 MB in the beginning and 166.6 MB in the end (delta: -65.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-10-06 00:17:30,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.30 ms. Allocated memory is still 205.5 MB. Free memory was 166.6 MB in the beginning and 164.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-06 00:17:30,168 INFO L168 Benchmark]: Boogie Preprocessor took 29.34 ms. Allocated memory is still 205.5 MB. Free memory was 164.5 MB in the beginning and 163.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 00:17:30,169 INFO L168 Benchmark]: RCFGBuilder took 323.53 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 147.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-10-06 00:17:30,169 INFO L168 Benchmark]: TraceAbstraction took 225301.25 ms. Allocated memory was 205.5 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 146.3 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2020-10-06 00:17:30,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.73 ms. Allocated memory was 139.5 MB in the beginning and 205.5 MB in the end (delta: 66.1 MB). Free memory was 100.7 MB in the beginning and 166.6 MB in the end (delta: -65.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.30 ms. Allocated memory is still 205.5 MB. Free memory was 166.6 MB in the beginning and 164.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.34 ms. Allocated memory is still 205.5 MB. Free memory was 164.5 MB in the beginning and 163.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 323.53 ms. Allocated memory is still 205.5 MB. Free memory was 163.1 MB in the beginning and 147.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225301.25 ms. Allocated memory was 205.5 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 146.3 MB in the beginning and 1.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 34 ProgramPointsBefore, 11 ProgramPointsAfterwards, 33 TransitionsBefore, 8 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 119 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 167 CheckedPairsTotal, 30 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 48 ProgramPointsBefore, 18 ProgramPointsAfterwards, 46 TransitionsBefore, 13 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 465 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1029 CheckedPairsTotal, 37 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 62 ProgramPointsBefore, 24 ProgramPointsAfterwards, 59 TransitionsBefore, 17 TransitionsAfterwards, 1656 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 966 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2190 CheckedPairsTotal, 48 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 76 ProgramPointsBefore, 30 ProgramPointsAfterwards, 72 TransitionsBefore, 23 TransitionsAfterwards, 2832 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 1585 VarBasedMoverChecksPositive, 41 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 4331 CheckedPairsTotal, 63 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 90 ProgramPointsBefore, 36 ProgramPointsAfterwards, 85 TransitionsBefore, 28 TransitionsAfterwards, 4320 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 2461 VarBasedMoverChecksPositive, 58 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 6550 CheckedPairsTotal, 76 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 104 ProgramPointsBefore, 42 ProgramPointsAfterwards, 98 TransitionsBefore, 33 TransitionsAfterwards, 6120 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 3 ChoiceCompositions, 3490 VarBasedMoverChecksPositive, 71 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 10455 CheckedPairsTotal, 89 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 118 ProgramPointsBefore, 48 ProgramPointsAfterwards, 111 TransitionsBefore, 34 TransitionsAfterwards, 8232 CoEnabledTransitionPairs, 6 FixpointIterations, 9 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 4656 VarBasedMoverChecksPositive, 73 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 13260 CheckedPairsTotal, 95 TotalNumberOfCompositions - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 132 ProgramPointsBefore, 54 ProgramPointsAfterwards, 124 TransitionsBefore, 38 TransitionsAfterwards, 10656 CoEnabledTransitionPairs, 5 FixpointIterations, 9 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 8 ChoiceCompositions, 6256 VarBasedMoverChecksPositive, 83 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 14959 CheckedPairsTotal, 105 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 680]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 680). Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 54 places, 38 transitions, 172 flow. Already constructed 152397 states. Currently 39934 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 8 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 224.9s, OverallIterations: 59, TraceHistogramMax: 8, AutomataDifference: 24.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 97.6s, HoareTripleCheckerStatistics: 1566 SDtfs, 1042 SDslu, 824 SDs, 0 SdLazy, 1192 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122716occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 100.5s AutomataMinimizationTime, 52 MinimizatonAttempts, 192156 StatesRemovedByMinimization, 51 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 712 NumberOfCodeBlocks, 712 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 555 ConstructedInterpolants, 0 QuantifiedInterpolants, 8977 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 52 InterpolantComputations, 52 PerfectInterpolantSequences, 582/582 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